

Limited and generalizing.
In your example, I think this is a defense mechanism more than anything. People deal with grief of separation in different ways. This looks dumb on the surface but it’s like burning your hand on the stove. You only need to do it once to be fearful of and therefore extra careful with all stoves. Person who likes blue and broke their heart = stove.

I think the telephone sort of fits. It’s attributed to Bell but that’s mainly because he wiggled his way into a US patent before his competition. The telephone has many fathers though: Bourseul, Manzetti, Reis - just to name three. The latter is also the father of the word telephone but died before it took off. There were many engineers tinkering so if Bell hadn’t taken the crown, another person would have done it.
Bonus answer: penicillin. Alexander Flemming. A lucky, accidental discovery. If mold hadn’t gotten sloppily into his cultures we might all have died of the plague or something nice like that.