Evidence receipt / evaluation
Published · transcript-backedAndy Weir: evaluation
20 Dec 2017 Conversations with Tyler Andy Weir on the Economics of Sci-Fi and Space
“Because water isn’t consumed — when you drink water it doesn’t disappear from the universe.”
Source trail
Everything needed to verify it.
- Speaker
- Andy Weir
- Attribution
- Verified speaker
- Claim type
- evaluation
- Recorded
- 20 Dec 2017
- Publisher
- Conversations with Tyler
Transcript context
…In your economic model, how expensive is water on the Moon? Well, water would . . . Water weighs a kilogram per liter, right? So if you wanted to just straight up ship water to the Moon, that would cost you 1,000 slugs a liter. However, you wouldn’t just ship water to the Moon. You’d ship hydrogen, in tanks, and react it with the oxygen, which is in plentiful supply. It’s a byproduct of smelting aluminum. So you would actually only have to bring up one-ninth of that mass in hydrogen. So in other words, for 1,000 slugs you could get nine liters of water. But it actually gets a little more complicated than that, or actually a lot cheaper than that. Because water isn’t consumed — when you drink water it doesn’t disappear from the universe. Correct.…
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