Many people think that academic philosophy is irrelevant to the real world. But it has increasingly important applications. Here's my list of some of the really interesting ones. Here's hoping philosophers will make further progress on some of these! 1. The Trolley Problem: self-driving cars will be put in situations where there is a choice between sacrificing the passenger to save two pedestrians. Or they might have to choose between killing a 5-year-old pedestrian vs. killing a 70-year-...