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this post was submitted on 27 Aug 2023
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Sure, weight is definitely a more important factor than idk, reaction ability in danger situations or physical resistance to unfriendly environments.
Yes, it is. On a long mission, even a few kg can have big differences in fuel consumption. Also the mean difference of reaction times between men and women is around 20-30ms, which is miniscule. Idk about the differences in resistance to space, but I highly doubt that men are significantly more resistant than women.
I’m not saying men are better than women in those aspects. I’m saying a very limited amount of people, both men and women, have the physical and mental fortitude to withstand a space mission, and there is virtually never going to be a situation where two people have the exact same qualifications and weight has to be the “tiebreaker”. It’s pretty much a non-factor.
Why is 20-30ms "miniscule", but "a few kgs" compared to the weight of a fucking spacecraft isn't?
Milliseconds and kilograms are worlds apart in magnitude (e.g. the difference between 1000 seconds (kilosecond... kinda) and 0.001 seconds (1 millisecond)). Secondly, the benefits of having 20 to 30 ms in reaction time is far less than the benefits of having less weight, even though a few kg and a few ms are not really that impactful. Weight directly increases fuel consumption, but reaction time would come into effect, as far as I know, in emergencies. Of course it's important to have a good reaction time at a time like that, but I'm pretty sure 20-30ms on average slower reactions isn't going to crash a spaceship. And if it does I would put that to faulty design or bad luck than the crew being 30ms late. Weight, however, would increase the fuel consumption in every step of the way, especially the launch stages. That limits the amount of fuel, components or resources on the ship. Few kg sure aren't much, but each kg might be a kg away from fuel, food, air or water the ship can handle. That of course depends a bit on the type of mission and spacecraft, as in space each kg affects less than on earth.
I would assume a manned mission would have larger tolerances due to the unpredictability of humans and to ensure their safety