"Earlier generations of scientists didn't have to wade through quite as much preexisting work before making an original contribution. Now innovators are establishing themselves much later in life. Over the last century and a half, the average age of a Nobel Prize winner at the moment of his great breakthrough has risen more than five years, from 34 to almost 39 years old. Run-of-the-mill inventors are also older: the average age for registering first major patents has jumped seven months per decade." - Tony Dokoupil

(Saw this in an inflight magazine somewhere)