On: Ask HN: What is the avg. age of a silicon valley engineer.

[Irishsteve]

Also consider many of these companies didn't exist 10 years ago. Total generalisation, but its perhaps unlikely that an older person will join a startup for a whole bunch of reasons. Primary one being "This google thing will never take off" :-)

[nanijoe → Irishsteve]

Most of them did exist 10 years ago, and most of the young people who joined them then are all not so young anymore