For those who don't know, Maurice Wilkes invented subroutines and microcode. https://en.wikipedia.org/wiki/Maurice_Wilkes
I always find it fascinating things like subroutines that are obvious to us now had to be invented by someone. You can easily imagine an alternate history where computing would look totally differently.
This is just the anthropic principle. The fact that somebody was first doesn't mean something wasn't obvious.
I like to complain about De Morgan's Laws, which state that:
(1) If neither of two things is true, then they're both false. (And vice versa.)
(2) If two things aren't both true, then one or both of them are false. (And vice versa.)
Augustus De Morgan lived in the 1800s, but obviously these laws were well known for many millennia before him. Having these laws named after you is the honorable-mention-in-the-Special-Olympics of making discoveries. It's an insult to the concept of naming things after people.