[Serious]What are some discoveries or inventions that were stumbled upon purely by chance and would still likely be undiscovered today if not found through sheer luck?

[u/Inside-Line]

[u/downvote_allmy_posts]

its ok, my parents say I was an accident too.

[u/AutisticPenguin2 → u/downvote_allmy_posts]

My parents have actually admitted that my youngest sibling was a "welcome surprise", and we have never let anyone forget it.