Astronauts in the last 50 years spending a lot of time together in a small group in an aluminium can, on the ISS for six month, sometimes for a year. Assuming t

Astronauts in the last 50 years spending a lot of time together in a small group in an aluminium can, on the ISS for six month, sometimes for a year. Assuming the ideas of longer Moon and Mars mission will happen, that reality will be far more longer. Split-second decisions may be a thing, but mostly rare. For long term small groups who won’t drive each other insane, I'd rather select for agreeableness and conscientiousness than low emotional reactivity.