Just bumped into this scrot of 
But now its got me wondering... how old is Dan if he's been programming for 23/24 years? I assumed he'd be in his 20s too... but its entirely possible my eyes have deceived me. His Wikipedia seems to lack any birthday information so now its become a mystery I want to solve.
Who is this mystery man, and at what age did he start programming? Was he coding in kindergarten, or is he just older than I assumed?