So, here's the deal: Space travel is really expensive because you need triple and quadruple redundancy on all life support systems and a bunch of other stuff to make it even as safe as, say formula one racing. Lots of folks think we should send people to Mars. But there's so much that could go wrong that all the fail-safe equipment will cost a bucket of money; and all that extra equipment has weight, and so requires more fuel, which has weight of its own and requires even more fuel. But what if a private company came along and said, okay, we're going to send people to Mars. We want volunteers. To keep the cost down we're just going to have two (instead of five) of the critical air and water recycling systems, and only one of other stuff, and we think each of our systems is pretty good, but we're only going to use just enough fuel, and we think it'll be enough, but because we can't afford better, we figure there's a 50/50 chance you'll make it there, spend a month exploring the red planet, and make it back home at the end of a five-year voyage. (Incidentally, the same length as the voyage of The Beagle, and a not unusual length for a Melville-era whaling voyage.) Would you go?