Everything we learned in school was wrong. The majority of those “facts” were known to be shit at the time when we were learning them.
An especially big piece of shit: Intelligent adaptable mammals defeated dinosaurs. Dinosaurs went extinct because they were big and stupid. This is still part of conventional wisdom, still used as an instantly understandable metaphor or fable.
In fact Bird == Dinosaur. The equals sign works both ways. It’s an equation, not a formula.
Birds are dinosaurs:
This was known back then. Some (not all) dinosaurs turned into birds. Birds are in the same intelligence range as mammals. Birds can defeat mammals by flying, which is another way of being big.
Dinosaurs are birds:
This seems to be newer knowledge, from looking more closely at dinosaur remains. Dinosaurs took care of their young, sang to each other, and had social groupings, just like birds.
Polistra's Mill 