Who is "they" here? There are completely separate committees for each subject's Nobel prize.

Edit: the individual committees are even not all run by the same institution [0]. The medicine prize committee is run from the Karolinska institute, whereas the physics committee, for example, is run by the Royal Swedish Academy of Sciences.

[0] https://www.nobelprize.org/the-nobel-prize-organisation/priz...

That’s too much inside-baseball for my taste. All committees are under the Nobel prize umbrella.

Check out Sean Carroll on the subject:

https://web.archive.org/web/20230224123835/https://twitter.c...