The human capacity to be playful never ceases to amaze. Even while hurtling through space at around 17,500 MPH (a statistic memorized during a childhood of astronautic ambitions) in a metal tube, with almost no leisure time, astronauts still make the time to make up – and play – games. Mostly, they play with their food. A recent Quora post by a NASA instructor/engineer proves that most astronauts could probably get a job at Valve, should they every have earthbound game design ambitions. – – – “They don’t get a lot of free time and when they do, they don’t…