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>Why not 4 astronauts?

You've been in the teamwork game a long time, right? You know that each new team member added to a team does something like double or quadruple communication overhead. They're trying to work out the kinks - they're going to with a small team of experienced people to stay focused.

There's probably also a limit to how many people they want to keep track of on ISS, like you said. It's also less risky like you said - you need two people in case one gets incapacitated, and also for psychological support, but you don't want to risk any more people on the maiden voyage than you have to.

>Compared to Soyuz [4], which cost NASA $80m/astronaut, that's a saving but not as much as I would've thought.

There's more to it than costs. We now have the agency to launch as many astronauts as we want, when we want, rather than filling in a vacant seat the Russians have. Something not considered in just costs is we can also charge other nations for rides on our rockets, and as long as it's less than $80m, we'll make profits and it'll be a win for those nations who'd normally ride on Soyuz.




Reduces risk for the first flight




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