I work in HR. I might steal this as some perspective for when someone insults the collective intelligence by claiming they couldn't have known and shouldn't suffer any consequences.
Bad HR immediately posts a sign saying Soda pouring near inclined load conveyance is prohibited by Management and has everyone take escalator soda slip safety training.
Good HR fires the dipshit as an example of what happens to dipshits, so people self-regulate and much less collective time can be spent on Stupid island having moronic conversations.