One thing about Marc's biography that I couldn't square: he was supposedly working for NCSA while an undergrad at UofI. My experience as an undergrad is that you could maybe get a guided tour of one of the labs. You may be able to get in the building if your professor worked there or something. The idea that a lab like NCSA would hire an undergrad for anything beyond menial work defies my experience.
Earlier I took it to be that he was such a genius that they decided to Doogie Howser him. But know that we know he's an idiot, that theory doesn't really stand up.