important problems

A 20-minute Y Combinator interview in which Sam Altman asks Elon Musk how to build the future. Topics include which problems a 22-year-old should work on, such as AI, genetics, and brain interfaces, and general advice for founders.

Giant Bomb interviews John Carmack at E3 2012 about his virtual reality head-mounted display prototype. He demos it and talks about latency, depth and focus problems in VR.

Westwood Studios co-founder Louis Castle talks about how pathfinding was solved in Command & Conquer: Tiberian Sun, in an Ars Technica War Stories episode. It also touches on other challenges in Westwood's RTS games.

Pierre Sprey, a designer of the F-16 and A-10, explains why he thinks the F-35 will not hold up on the modern battlefield. It is part one of a series of F-35 critique videos.