Earlier quoted context omitted.
You are a team, but you should still attempt to be objective enough in your evaluation to determine whether a new person will allow you to be a functional team. But when you say "culture fit", the implication is that the team would prefer not to change at all, not that it would accept changing into a different-yet-comparably-productive team.
Maybe I used culture fit the wrong way. I just meant the ability to get along in non-trivial situations and communicate effectively. I've met people who I have so little in common with that we couldn't even share a joke in either direction, because the recipient just couldn't understand it at all. It was so difficult to accomplish even basic things because our experiences were so different that we didn't have common…
I am curious what kind of work this was, if you can share.
I had a lot of difficulty in the past when working in situations where there was "life-experience" context to the problem space that was not shared by the whole team.
But we had to get the job done so we worked around it.
I think in the end the need to be more explicit, to provide more context and to work towards abstract descriptions of problems was also a positive.
When life gives you lemons and all that.