Answer to Question #130151 in Philosophy for Ifann Li

Question #130151
If astronauts spend long periods in zero gravity only if calcium is reabsorbed in their bodies, then astronauts on a Mars voyage will arrive with brittle bones. If astronauts attempt a voyage to Mars only if they spend long periods in zero gravity, then astronauts on a Mars voyage will arrive with brittle bones. Thus, astronauts on a Mars voyage will arrive with brittle bones.

(Z, C, B, V)

P.S: indirect proof(IP) cannot be used!
- suggest using Reductio ad absurdum and Conditional Proof if needed
1
Expert's answer
2020-09-02T06:46:56-0400
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