[Beermotor]

Care to cite a source for that, and more specifically what age this begins?

Also what level of impairment are we talking about here? You make it sound like everyone over a certain age is a doddering old coot. :)

[itsybitsyspider]

A quick Google search:

http://news.mit.edu/2015/brain-peaks-at-different-ages-0306

I also didn't mean to sound like that :) I'm on the "decline" side and even though I'm not necessarily happy with that, I also understand that you can't cheat biology.