Comment Re:National vs. Commercial Interests (Score 1) 540
When I go to sleep, there's a reasonable chance that, when it is time for me to wake up, there will be breathable air outside, temperatures will be livable, water will be plentiful enough, food will be somewhat easily obtained.
There is also a non-zero chance that your furnace will malfunction and asphyxiate you with carbon monoxide, or one of many electrical appliances will malfunction and catch your house on fire while you sleep, or that someone will break into your home and murder you. Yes, even sleeping is risky here on earth. Yes, there are more risks to living there.
We make choices about risk all the time. Some people enjoy the thrill of extreme risks, like jumping out of perfectly good airplanes with one mechanical device between a happy landing and a mess of bloody broken body parts, and we don't generally consider them insane.
Imagine your fridge breaking in June and having to wait until April for a replacement fridge.
That's why you have multiple redundancies in critical life support systems. What does the ISS do? It's not like we can overnight supplies to them via fedex. The lead time will be longer for Mars since the actual flight time of resupply ships would be longer, but that simply means factoring in some additional levels of redundancy into the system.