ALEX TABARROK writes that space tourism isn’t ready for takeoff: “The problem is not the monetary expense, there are enough millionaires with a yearning for adventure to support an industry. The problem is safety. Simply put, rockets remain among the least safe means of transportation ever invented.” That’s true, though some people also have a fairly high risk threshold for voluntarily adventurous activities.

UPDATE: David Nishimura agrees with me, and has the numbers to prove it.