Teaching code optimization to 11-year-old son.
carymillsap.blogspot.com
carymillsap.blogspot.com
God save me from one more code review where somebody made a for loop over months in the freaking year an obtuse nightmare because they had (mostly wrong!) ideas about how they could shave off a few processor cycles twelve whole times. (Inline functions for extra speedup! Forget standard math operators, lets twittle bits! Business objects are for wimps, we'll stick everything in one String -> String hash table and compose the keys with inlined uncommented StringBuilder monstrosities!)
When I was 11, my father fled overseas and I carried a pseudonym, and a rifle almost as tall as me:
http://en.wikipedia.org/wiki/SAR-80
(any other civil war children on HN?)
robg's son - Code optimization (result pending)
aristus - Circuit debugging (turned out to be very useful)
J_McQuade - How to tend goal (skill no longer applicable)
biotech - World geography and history (good to know in social situations; I work with, and live near, people from all over the world)
Anyone else?