Can not find it now but apparently the average age of a developer in Facebook is way below 30 (27 IIRC). I guess it could be true that in some startups if you'

Can not find it now but apparently the average age of a developer in Facebook is way below 30 (27 IIRC). I guess it could be true that in some startups if you're 29 and everyone is 22 you're not perceived a "cultural fit" (my evidence on it is purely from HN threads though)