Childhood: electronics, chemistry, internal combustion. Took lots of shit apart that could not be put back together.
Adolescence: dirt bikes, sports, poverty, 24/7 erection.
College: poverty, drugs, electric guitar, bicycles.
Young adulthood: Naval Aviation, war, prosperity, more college.
Adulthood: doctorate, surgeon, trader.
I built flip-flop circuits as a kid in 1975; in 2015 I don't know how to take a picture with my flip phone, and I don't really care. I have never owned my own television set. I got a call from Nielsen once, and they didn't believe me.
Hope this is sufficient.