Interesting. Looks like everyone here have been successful solving their most difficult tech challenges. Wow. Taking it easy ;) I'll tell you a story about o

Interesting. Looks like everyone here have been successful solving their most difficult tech challenges. Wow. Taking it easy ;) I'll tell you a story about one of mine. When I was around 13, I've tried to develop a smallish application that could keep a small local DB of medical results for some medical equipment. It should have had a pretty-looking UI, and the fashionable technology at the time was Turbo Pascal/Turbo Vision. At the time I've already been an Ok hacker (at a level of being able to write an antivirus to an unknown virus), hacking hardware since I could remember myself and writing in C since eight or something. You get the gist. Anyway, I had about a month to write that stupid DB application. Including learning Turbo Pascal, OOP, damn virtual functions tables, Turbo Vision. With no internet, no prior knowledge of Turbo Pascal, no examples, no manuals, and an idiotic Turbo Vision book that had contained broken code. I think it was my toughest project ever so far. And I've failed it too ;) On a serious note, I think that inventing useful and fundamentally new algorithms is it. Easily takes half a year of time keeping it in the back of your mind.