The people in SF/SV building apps are mostly in their 20s-30s.
The people building cool technology are mostly in their 40s-50s.
|The authors examined the high points of the careers of both great inventors and Nobel-Prize winning scientists, and they found that the late 30s were the sweet spot for strokes of genius
The gist is that this number (38ish) has been slowly creeping up over the past century; it is generally higher in those fields which require a synthesis of huge amounts of knowledge (experimentalists) and earlier among theorists. Notice that essentially no one has done anything groundbreaking in their 50s (yet).
I know 20 year olds making brain wave analysis breakthroughs and 50 year olds making poker apps. And the reverse.
Great work knows no age.
And there's not enough of it to go around.