Samsung - hiring 5000 engineers for DRAM work?

This is astounding:

Among Makers of Memory Chips for Gadgets, Fierce Scrum Takes Shape - New York
Times:

...Samsung also said it would hire 5,000 more engineers to increase research and development of new chips...

Five thousand engineers? That's not a typo, though the hiring is over 7 years. Even so, if they mean real engineering school graduates that's a heck of a lot of brainpower. That's 50 years output from a typical engineering school. They'd have to pillage the engineering powerhouses of the world: India, China, Taiwan, South Korea ...

I can't see how they could effectively use that many engineers ...