Wednesday, April 04, 2007
The Poincare Conjecture, In Our Time, and the limits of human minds
It's a great show, but they needed another hour to do justice to Poincaré and to the lay version of his mathematics. More significantly, I think IOT hit the limits of what the medium can handle with this topic; Melvynn kept half-joking that his head was hurting. The one non-mathematician guest had to opt out of a final comment, saying "this is too hard for me". The listener comments reflect how challenging the topic was.
Which brings me to my recent readings in physics. I'm reading Gribbins on Quantum Mechanics (1994) and Brian Greene with another cosmology/string theory overview, the Gribbins book is my personal favorite, but it's a bit dated now. Together though, they make it hard to overlook that physics seems to be getting harder and harder. We have more physicists than ever, and I'd wager there's a Feynman or two in the bunch, but we've been stuck for decades now. String theory's luster is a bit tarnished (Smolin et al), special relativity doesn't fit with 'spooky action at a distance', we can't unify gravity and QM, the math keeps getting harder (or so I read) and the universe feels ever more absurd and ill-suited to the frailties of the human mind.
Sort of like Perelman's proof of the Poincaré conjecture, which teams of mathematicians are still slogging through years after its unofficial publication. Modern mathematics is said to be so complex only hyper-specialists can tackle it, but hyper-specialists can't make the kind of cross-domain breakthroughs Poincaré made.
I wonder if we'll run aground until we come up with better minds -- either human or otherwise.
PS. Firefox spell checking is very impressive. It corrected my spelling of Melvyn Bragg's first name!
Tuesday, April 03, 2007
Pet Poisoning 2007: SFGate has the best overview
YOUR WHOLE PET / Bigger than you think: The story behind the pet food recallI used the "canaries in the coal mine" analogy a week ago. Based on what little we know to date, the death toll must be in the thousands and the rate of renal injury must be far higher. The emotional cost to tens of thousands of Americans is very high, and they will not forget that their government, yet again, failed them. Anyone who doesn't think this couldn't have happened to human consumers is sadly lacking in imagination. Besides a failure to comment on the likely injury rate, another item not covered in this otherwise topical review is the Homeland Security angle.
... I'm a contributing editor for a nationally syndicated pet feature, Universal Press Syndicate's Pet Connection, and all of us there have close ties to the veterinary profession. Two of our contributors are vets themselves, including Dr. Marty Becker, the vet on "Good Morning America." And what we were hearing from veterinarians wasn't matching what we were hearing on the news.
When we started digging into the story, it quickly became clear that the implications of the recall were much larger than they first appeared. Most critically, it turned out that the initially reported tally of dead animals only included the cats and dogs who died in Menu's test lab and not the much larger number of affected pets.
Second, the timeline of the recall raised a number of concerns. Although there have been some media reports that Menu Foods started getting complaints as early as December 2006, FDA records state the company received their first report of a food-related pet death on February 20.
One week later, on February 27, Menu started testing the suspect foods. Three days later, on March 3, the first cat in the trial died of acute kidney failure. Three days after that, Menu switched wheat gluten suppliers, and 10 days later, on March 16, recalled the 91 products that contained gluten from their previous source.
Nearly one month passed from the date Menu got its first report of a death to the date it issued the recall. During that time, no veterinarians were warned to be on the lookout for unusual numbers of kidney failure in their patients. No pet owners were warned to watch their pets for its symptoms. And thousands and thousands of pet owners kept buying those foods and giving them to their dogs and cats.
At that point, Menu had seen a 35 percent death rate in their test-lab cats, with another 45 percent suffering kidney damage. [jf: of those exposed, 80% were injured or killed] The overall death rate for animals in Menu's tests was around 20 percent. How many pets, eating those recalled foods, had died, become ill or suffered kidney damage in the time leading up to the recall and in the days since? The answer to that hasn't changed since the day the recall was issued: We don't know.
We at Pet Connection knew the 10-15 deaths being reported by the media did not reflect an accurate count. We wanted to get an idea of the real scope of the problem, so we started a database for people to report their dead or sick pets. On March 21, two days after opening the database, we had over 600 reported cases and more than 200 reported deaths. As of March 31, the number of deaths alone was at 2,797.
There are all kinds of problems with self-reported cases, and while we did correct for a couple of them, our numbers are not considered "confirmed." But USA Today reported on March 25 that data from Banfield, a nationwide chain of over 600 veterinary hospitals, "suggests [the number of cases of kidney failure] is as high as hundreds a week during the three months the food was on the market."
On March 28, "NBC News" featured California veterinarian Paul Pion, who surveyed the 30,000 members of his national Veterinary Information Network and told anchor Tom Costello, "If what veterinarians are suspecting are cases, then it's much larger than anything we've seen before." Costello commented that it amounted to "potentially thousands of sick or dead pets."
The FDA was asked about the numbers at a press conference it held on Friday morning to announce that melamine had been found in the urine and tissues of some affected animals as well as in the foods they tested. Dr. Stephen Sundlof, director of the Center for Veterinary Medicine, told reporters that the FDA couldn't confirm any cases beyond the first few, even though they had received over 8,800 additional reports, because "we have not had the luxury of confirming these reports." They would work on that, he said, after they "make sure all the product is off the shelves." He pointed out that in human medicine, the job of defining what constitutes a confirmed case would fall to the Centers for Disease Control, but there is no CDC for animals.
Instead, pet owners were encouraged to report deaths and illness to the FDA. But when they tried to file reports, there was no place on the agency's Web site to do so and nothing but endless busy signals when people tried to call.
Veterinarians didn't fare much better. They were asked to report cases to their state veterinarian's office, but one feline veterinary blog, vetcetera, which surveyed all official state veterinarian Web sites, found that only eight had any independent information about the recall, and only 24 even mentioned it at all. Only one state, Vermont, had a request on their site for veterinarians to report pets whose illnesses or deaths they suspect are related to the recall. And as of today, there is no longer a notice that veterinarians should report suspected cases to their state veterinarians on the Web site of the American Veterinary Medical Association.
The lack of any notification system was extremely hard on veterinarians, many of whom first heard about the problem on the news or from their clients. Professional groups such as the Veterinary Information Network were crucial in disseminating information about the recall to their members, but not all vets belong to VIN, and not all vets log on to VIN on the weekend (the Menu press release, like most corporate or government bad news, was issued on a Friday)...
...How did this problem, now involving almost every large pet food company in the United States, including some of the most trusted -- and expensive -- brands, get so out of hand? How come pet owners weren't informed more rapidly about the contaminated pet food? Why is it so hard to get accurate numbers of affected animals? Why didn't veterinarians get any notification? Where did the system break down?
The issue may not be that the system broke down, but that there isn't really a system.
There is, as the FDA pointed out, no veterinary version of the CDC. This meant the FDA kept confirming a number it had to have known was only the tip of the iceberg. It prevented veterinarians from having the information they needed to treat their patients and advise pet owners. It allowed the media to repeat a misleadingly low number, creating a false sense of security in pet owners -- and preventing a lot of people from really grasping the scope and implication of the problem.
... On Sunday night, April 1, Pet Connection got a report from one of its blog readers, Joy Drawdy, who said that she had found an import alert buried on the FDA Web site. That alert, issued on Friday, the same day that the FDA held its last press conference about the recall, identified the Chinese company that is the source of the contaminated gluten -- gluten that is now known to be sold not only for use in animal feed, but in human food products, too. (The Chinese company is now denying that they are responsible, although they are investigating it.)
Although the FDA said on Friday it has no reason to think the contaminated gluten found its way into the human food supply, Sundlof told reporters that it couldn't be ruled out. He also assured us that they would notify the public as soon as they had any more information -- except, of course, that they did have more information and didn't give it to us, publishing it instead as an obscure import alert, found by chance by a concerned pet owner, which was then spread to the larger media.
All of which begs the question: If a system to report and track had been in place for animal illness, would this issue have emerged sooner? Even lacking a reporting and tracking system, if the initial news reports had included, as so many human stories do, suspected or estimated cases from credible sources, it's likely this story would have been taken more seriously and not just by Rosie O'Donnell. It may turn out that our dogs and cats were the canaries in the coal mine of an enormous system failure -- one that could have profound impacts on American food manufacturing and safety in the years to come.
Once again, we have legions of obsessive bloggers to thank for keeping a story alive that the mainstream media keeps trying to forget.
Oh, and yes, Rosie O'Donnell's producers and support staff are either very dim or very nasty.
Clearwater: crushed by condominums
Clearwater Beach is exhibit A. It's still a beautiful sight heading out from land, but the condo density is amazing. They're mostly dull rather than ugly, but there are a lot of them. I assume the economics of such high density, high cost accommodation are pretty overwhelming, in time they'll swallow the Keys -- unless the storm threats become overwhelming. Of course the ultra-rich will still be able to build estates and hang the cost -- but even in America this is a relatively small group.
I suspect most folks prefer the old Florida of single story wood frame buildings. We found a fair bit of that on Anna Maria island, but it felt like an anachronism.
Besides condos and estates, one other category of dwelling caught my eye. Southwest Florida has the greatest concentration of genteel trailer parks I've ever seen. I assume they're mostly occupied by non-wealthy elders. I wonder how they fit into the evolving land use pattern, and where the economics of the florida mobile home are going to go
... one out every five new single-family housing units purchased in the United States is a mobile home, sited everywhere from the conventional trailer park to custom-designed "estates" aimed at young couples and retirees...
Lycra swim shirts (rash guard) - no sun-fearing geek should be without
The shirt had no SPF rating, I've seen them quoted as "18", but this SPF stuff is nonsense. If I'd been wearing SPF 50 sunblock I'd have been disabled by the third day of nonstop sun. I ended up as pale as a dead fish in the area covered by the shirt (I did use sunblock beneath it). I paired the shirt with my ultra-fashionable camping hat -- super broad bill, rear fabric drape from hairline to shirt top. Works fine in the surf, and it's great at keeping beautiful starlets at bay (the latter is a joke, the less fashionable beaches we visit show why American endocrinology has such a great future).
It's true that manly men and Republicans have a hard time wearing these shirts, though I think they may be popular among surfers. Geeks and Democrats, however, should consider them proof of a rock solid ego. Recommended.
Update: For next year's model I want a hoodie. A Lycra hood I could slip on and off would work better underwater than my camping cap ...
Sunday, April 01, 2007
Aminopterin, melanine and what else?
Melanine is in the Chinese gluten, but it's not supposed to be nephrotoxic. The focus is still on the Chinese gluten (which apparently has lots of fun ingredients), but maybe it's not the gluten after all. A dry cat food has also been recalled.
I hope Homeland Security is paying attention.
In the meantime, my personal conclusion that our family needs to switch to human-regulated foods for our dog stands.
Saturday, March 31, 2007
A clear flaw with closed source: longevity
MacInTouch 3/07: Archival Issues (reader contribution)Let's learn from this. Don't invest in products dependent on closed source solutions. Speaking of FairPlay and every other DRM solution ... What do you think the chances are you'll be able to read a FairPlay DRMd file in 10 years?
... One of my fondest treasures is a 32 disk CD-ROM set in a mahogany box, "The Complete National Geographic" magazine. It was a searchable collection of every page of every issue of National Geographic for 109 years. I bought it in system 7.5 days and used it up thru OS 9. But support for this collection met a tragic death
National Geo had farmed out the development to a chain of third party developers...Mindscape, The Leaning Center, and Broderbund (of PrintShop fame) whom for whatever reasons had "difficulties" in sustaining the project regardless of its merits. Each company's edition under the National Geo brand came with a proprietary Reader/Searcher. The various versions were not compatible, not even in consecutive years... The series died about 1999 and support for it didn't last much longer. Some of those companies still exist but avoid all talk of the Complete National Geo debacle. I've tried. Even National Geographic customer service is curiously mute.
It's exasperating to think that all that historical data, all those articles, all those photographs, are sitting on my shelf and cannot be viewed with today's operating system. ( The Reader/Searcher looked to my naive eye like a kissing cousin to Acrobat.)
If only the source code for the Complete National Geographic CD-ROM set were available and could be updated to run natively on OS-X and other contemporary platform...
Shame on National Geographic, btw. The best explanation is they didn't negotiate their contracts properly ...
Wednesday, March 28, 2007
Apple TV ships, iTunes Store a smoldering crater
An ominous hint of what consumer video distribution will mean to the net? Not all bad news for Apple though ...
Kristof on how to turn lunch money into hope
The New York TimesYes, it's a bit gimmicky, it would presumably be more efficient to give the money to CARE.ORG and let them donate to a microfinance organization. Still, the human angle might help draw in some extra funds. Going forward, the interesting possibility is going the next step, and becoming an active business partner. So make the loan, but also become involved in the enterprise. A bit like being an armchair peace corp person.
March 27, 2007
You, Too, Can Be a Banker to the Poor
By NICHOLAS D. KRISTOF
...From my laptop in New York, I lent $25 each to the owner of a TV repair shop in Afghanistan, a baker in Afghanistan, and a single mother running a clothing shop in the Dominican Republic. I did this through www.kiva.org, a Web site that provides information about entrepreneurs in poor countries — their photos, loan proposals and credit history — and allows people to make direct loans to them...
... Mr. Abdul Satar said he didn’t know what the Internet was, and he had certainly never been online. But Kiva works with a local lender affiliated with Mercy Corps, and that group finds borrowers and vets them.
The local group, Ariana Financial Services, has only Afghan employees and is run by Storai Sadat, a dynamic young woman who was in her second year of medical school when the Taliban came to power and ended education for women...
...Web sites like Kiva are useful partly because they connect the donor directly to the beneficiary, without going through a bureaucratic and expensive layer of aid groups in between....
...A young American couple, Matthew and Jessica Flannery, founded Kiva after they worked in Africa and realized that a major impediment to economic development was the unavailability of credit at any reasonable cost....
I'll give it a try.
Aminopterin update: likely thousands harmed
ABC News: Group Says Pet Food Deaths UnderreportedThe labs are having trouble working with the gluten, so it will be some days before they can determine if gluten was really the source, and if the contaminated gluten is entirely Chinese. They are careful to note they cannot exclude other toxins. If we ever understand how the Aminopterin contamination occurred, we will have a better idea of the likelihood of secondary toxins.ALBANY, N.Y. - At least 471 cases of pet kidney failure have been reported in the 10 days since a nationwide recall of dog and cat food and about a fifth of those pets have died, a veterinarians' information service said Tuesday...
... Paul Pion, founder of the Veterinary Information Network, which counts 30,000 veterinarians and veterinary students as members, said Tuesday the number of reported kidney failure cases had already grown higher than the 471, but he said he wouldn't have an updated tally for a few days.
Of the reported cases, he said, 104 animals have died. The network's survey results were earlier reported by the Los Angeles Times.
Pion, a California veterinarian, said only 10 percent to 20 percent of the people who belong to his Web site had responded to a request for information.
... Researchers at the New York food lab, Cornell University and other labs were still working Tuesday to pinpoint which individual ingredients were tainted with the poison, officials said. They also said there could still be undetected hazards in the food...
A conservative extrapolation of Pion's numbers suggests a renal failure toll to date of about 4,000 pets, with a death rate still running at around 20%. It is likely the majority of the sick had more vulnerable kidneys, probably older cats. A larger number of animals will suffer significant kidney damage without symptoms. Their lives may be shortened. It is likely that significantly more than 4,000 animals will have been harmed.
When we learn how this happened, we will also be able to draw inferences about how often lesser problems may have occurred with pet food manufacturing and distribution over the past few years. It would be surprising if all the problems are being detected; error analysis in other domains always finds that these "sentinel events" represent the "tip of the iceberg".
We will continue to investigate if we can substitute human-regulated food for a significant portion of our dog's diet going forward.
Tuesday, March 27, 2007
Fear in the blogosphere: Microsoft hunts again
I suspect there are a few young techies who do not fear Microsoft. They don't remember when Gates et al pillaged the landscape, sowing salt on the burning embers of resistant villages, conquering with ruthless power and endless treachery. I confess, I have contributed to a false sense of security by pointing out how incompetent Microsoft has been in the past few years.
It is time for me to right my wrong. Microsoft hunts again.
There is only one good tool on any platform for efficient blogging in both Google's Blogger and the open source Community Server (metaweblog API) environment, and it's Microsoft product - Windows Live Writer. I've tried all the rest, they don't compare. [See Update!]
Live Writer only works with IE. It only works with Windows. Yes, there's a Firefox plug-in for Live Writer. It broke long ago, and, oddly enough, it's never been updated.
BlogJet was very good in version 2.x, but version 3.x is a mess. Scribefire is very minimalist and just broke with Firefox 2.03. One the Mac side Mars Edit and Ecto aren't even in the race -- they assume that all writing is done from a single machine. They can't properly handle fetching and editing past posts. They are also updated slowly if at all -- I could go on. They are goners.
Google's integrated "BlogThis!" bookmarklet hasn't been updated to support Blogger 2.0's tags and it's slow, quirky, and underfeatured (Blogger 2.0, btw, is a vast improvement over Blogger 1.0).
So Microsoft has a free tool that is vastly better than anything else, it only works with IE/Windows, and it's smack in the middle of a strategic market. Wow, doesn't this feel familiar?
Is anyone awake out there? Have all the geeks been lulled to sleep by Microsoft's seeming incompetence over the past few years? Where's Google anyway? What happened to all those Firefox development efforts? Is Apple trying to ignore the blogging world? (Anyone remember the transient blogging tool once bundled with new Macs?)
All is not lost. Sharepoint 2007's blogging support is miserable, and Microsoft has invested a lot in Sharepoint. Maybe the Sharepoint team will end up destroying Live Writer. I know I'm rooting for them, because as much as I like Live Writer, I've seen this movie before ...
[1] Update 1/5/09: Thanks to very helpful comments on this post I have learned that Adobe Contribute for OS X and Windows (list $170) will work with Blogger and other standards compliant platforms. It's very expensive and suffers from being an Adobe product (they don't seem to understand how to install OS X software) but I'll try to get a look at it.
Monday, March 26, 2007
Aminopterin update: isolating the source and it's not the FBI's job ...
Helena Independent RecordInteresting that the FBI's responsibilities do not extend to products tampered with outside of store shelves. I wonder who handles those? Homeland security to be sure, but they don't launch criminal prosecutions ...
... The laboratory that identified the poison believed to be responsible for the death of pets around the country has started testing individual components of the tainted pet food to determine which ingredient was contaminated, officials said Monday.
Scientists at the New York State Food Laboratory on Friday identified aminopterin as the likely culprit in a poisoning scare that prompted the recall of 95 brands of "cuts and gravy" style dog and cat food.
Department of Agriculture and Markets spokeswoman Jessica Chittenden did not know when the lab would have results from the new tests.
The federal Food and Drug Administration has said the investigation into the pet deaths was focused on wheat gluten. Stephen Sundlof, the federal agency's top veterinarian, said Friday it remains the suspected source of the contamination...
... Cornell University's veterinary school also is testing the food. Dr. Donald Smith, dean of the school, said the tests of the individual food components would likely take days.
"It's a very challenging set of procedures," he said. "We have to keep in mind there are other things out there that could potentially be hazardous. We are working very hard to confirm it was aminopterin."
... FBI spokesman Stephen Kodak said the agency is "not involved in any way, shape, or form." He said the FBI would likely only get involved if evidence pointed to the products being tampered with while on store shelves.
Chittenden said any criminal investigation would have to be initiated by the FDA...
British government concedes the 650,000 death toll for Iraq is credible
BBC NEWS | UK | UK Politics | Iraqi deaths survey 'was robust'I wrote this when the estimate was 100,000 and this about the 600,000+ estimate:
... The British government was advised against publicly criticising a report estimating that 655,000 Iraqis had died due to the war, the BBC has learnt.
Iraqi Health Ministry figures put the toll at less than 10% of the total in the survey, published in the Lancet.
But the Ministry of Defence's chief scientific adviser said the survey's methods were "close to best practice" and the study design was "robust".
Another expert agreed the method was "tried and tested"....
... If we adjusted the Iraqi toll to our population of 300 million, the conflict would claim 6 million Americans lives. Would we call that a civil war? The "conflict" in Iraq is now up to about 60% of the death total of a war that most of would consider "civil"...In the US we consider our civil war to have had horrific casualty figures, though ours were concentrated among combatants (young men). Whether the "true" number is 200,000 or 650,000, the conflict in Iraq is within range of the carnage of the American civil war.
Phil Carter on the six year free fall of America
Phil comments on a Zbignew Brzezinski editorial in WaPo: INTEL DUMP - The only thing we have to fear is . . . us. In brief, the choices of Cheney/Bush have been a disaster for the US and the world.
And yet ... I still think that we're extremely vulnerable as a society to attacks that would dwarf the destruction of the twin towers. Much of the reaction to 9/11 has been driven not only by what happened, but also by what imaginative people thought could and would happen next. Brzezinski wrote:
... The terror entrepreneurs, usually described as experts on terrorism, are necessarily engaged in competition to justify their existence. Hence their task is to convince the public that it faces new threats. That puts a premium on the presentation of credible scenarios of ever-more-horrifying acts of violence, sometimes even with blueprints for their implementation...So is he saying the scenarios were and are not credible? Scanning the rest of the editorial he seems to be saying the threats are indeed credible, but that our responses to date are a panicked, ineffective and dangerous distraction for what we should be doing.
My position is that while Cheney/Bush are the most incompetent American leadership since the end of the 19th century, that the danger is real. That makes their failures all the worse. We have been digging holes instead of building dikes. [1]
[1] Note, invading Afghanistan is not an exception to the Cheney/Bush disaster. That was an automatic and valuable response -- not even Cheney/Bush can completely mess up everything.
Sunday, March 25, 2007
Aminopterin update: more details from blogs
Conservative Cat: Menu Foods Recall and the 40 Parts Per MillionThe proposal is the appropriate Libertarian solution -- let the market decide. I'm not sure, but this might have worked for tuna and dolphin kills. It requires a credible threat of a consumer boycott to motivate manufacturers to take these measures. This will increase product costs, a manufacturer can't take this step unless the entire market moves at once. That requires either regulatory action or a very committed consumer based. Consumers can muster that focus for a few products, but not for all of them all the time. It's an unwinnable battle in the real world. Regulation is cost inefficient, but the alternative very, very, rarely works. It just doesn't scale across the range of an economy.
...We now have more information about the contamination in the Menu Foods products. The New York State Animal Health Diagnostic Center at Cornell University and the New York State Food Laboratory tested three samples of the contaminated products. One sample was clean, but the others contained aminopterin at a level of 40 parts per million. According to Cornell lab director Bruce Akey, this is a sufficient concentration to cause kidney failure in dogs and cats.The operating hypothesis at this point is that the aminopterin was sprayed on the wheat during shipping or storage in order to prevent rats from eating the crop. Because the normal method of creating gluten from wheat is by washing it, this had to have happened after the wheat had been converted.
Wheat gluten is high in protein and has a chewy texture. The so-called cuts and gravy pet foods use the gluten to to make the food bits feel meatier when they're being chewed. This is not necessary in your standard canned or dry pet foods. The safest protocol for buying pet food right now is to look at the ingredients, and if it does not say wheat gluten, you're safe no matter who makes the product. You'll end up passing over some good stuff that's not contaminated, but it's much easier than memorizing the long list of brand names. This is just until the crisis passes, by the way. There's nothing wrong with wheat gluten when it hasn't been poisoned.
Before the government does something drastic and saddles them with a lot of expensive testing procedure, Menu Foods and other manufacturers should consider getting their wheat locally and plastering 100% American Made on the can and pouch labels. It will mean a price increase, but it's nothing compared to the cost of a new Federal agency for pet food regulation...
Update on the unfinished count of the human genome
The Loom : You Don't Miss Those 8,000 Genes, Do You?I recall from Dickson's 1970s "Dorsai" cycle that much research in that "space opera" consisted of mining "the encyclopedia" (re: the web) for knowledge. Zimmer is quietly predicting "knowledge mining" will become a bit part of science description -- not just writing, but also doing science. In fact, I'm not sure there's a clear difference between knowledge mining and classic science, though I confess knowledge mining seems to have some resemblance to the medieval scholasticism.
... When Craig Venter and his colleagues published their rough draft of the human genome in 2001 they identified 26,588 human genes. They then broke those genes down by their functions. Some were involved in building DNA, some in relaying signals, and so on. Remarkably, though, they classified 12809 genes--almost half--as "molecular function unknown."
... There are web sites where you can observe works in progress, such as the human genome. One of those sites is called PANTHER. I contacted the top scientist behind it, Paul D. Thomas, with my question, and he sent me a link. When I clicked on the link, I got the pie chart I've posted here (click on the image to go to the original page if it's hard to read).
The pie shows that we're now down to just 18,308 genes. That's over 8,000 genes fewer than six years ago. Many sequences that once looked like full-fledged genes, capable of generating a protein, now don't make the grade. Some genes turned out to be pseudogenes--vestiges of genes that once worked but have been since wrecked by mutations. In other cases, DNA segments that appeared to be parts of separate genes have turned out to be part of the same gene.
Today scientists still don't know the function of 5898 genes in the human genome...For all the work that has poured into the genome, for all the grand announcements, we still don't know have the faintest idea of what about a third of our genes are for.
... few human genes have experimental evidence for their function in humans. In one study of 35329 proteins, scientists estimated that only 2784 met this gold standard.
... And then there's the whole matter of all the other DNA that doesn't encode proteins (98.5% of the genome all told). A lot of it is most likely a mishmash of broken genes and viral DNA. It's possible to cut huge swaths of it out of a mouse's genome with no apparent ill effect. But there are also a lot of important players hiding in that wilderness--switches that proteins can use to turn genes on and off, sequences that do not give rise to proteins but rather RNA molecules that create their own control system for a cell. In all of these complications, scientists will probably find the answer to the question, "How do roughly the same number of genes encode such different kinds of animals?" Complexity isn't purely a matter of the number of genes you have. It's also how you use them.
...few human genes have experimental evidence for their function in humans. In one study of 35329 proteins, scientists estimated that only 2784 met this gold standard...
... I would not have been able to have created this pie chart without Thomas's help. Perhaps some science writers will become more like investigative political reporters who know how to sift through Federal election databases for the real news...
We're now in the story of the 'incredibly shrinking genome'. Meanwhile we learn elsewhere in Zimmer (I think it was there) that humans and chimpanzees are much less alike than we'd thought. There are many ways to encode complexity, and evolved organisms have a rather baroque approach to solving such problems.
Update: If we extrapolate a bit, it would not be surprising to discover that we have about 16,000 genes that code for 35,000 proteins. So there's a 2:1 compression ratio from gene to expression, which is comparable to best lossless compression algorithms run against highly complex data. The 2:1 ratio presumably must have some implications for how natural selection can proceed. It's easy to imagine that a mutation in a gene that "improves" the function of one protein product might disable another protein coded by the same gene. So evolution would typically proceed "two steps forward and one step backwards", or at best with peculiar side-effects on a secondary protein arising from changes to the primary protein.