The cost of havoc has been falling for a long time ...

I still wonder what will happen when bio-weapons are available to every heartbroken adolescent male.

On the other hand, people have noted the falling cost of havoc before ...

Schneier on Security: The More Things Change, the More They Stay the Same

... Murderous organizations have increased in size and scope; they are more daring, they are served by the most terrible weapons offered by modern science, and the world is nowadays threatened by new forces which, if recklessly unchained, may some day wreck universal destruction....

Follow the link for context.

We're still around. I don't understand how that's possible given all the close calls of the cold war, but it seems to be true.

Great post.