We interviewed a Busuness school Finance senior to help on our COMSTOCK satellite feed parsing project.'Do you know C++?" we asked. "Yes" he lied, then "Can I come in over the weekend to get started?" How enthusiastic! Sure!
Turns out he spent the weekend studying code, learned to program C++. I didn't see him for a few weeks, then consulting on his code over something I mentioned "This would be better allocated". "Yeah, I wondered what the pointer stuff was about". I was astonished he'd come so far on guts and smarts. I explained malloc, pointers, he was off again.