There were no monkeys when dinosaurs existed, also more time elapsed between the stegosaurus in the back existing and the t rex and triceratops than between them and us.
I wonder if there isn’t a stable chamber shape that promotes turbulence in a controlled manner in order to prevent it getting out of hand? A little bit like the dimples on a golf ball create micro pockets of turbulence promoting laminar flow.
Geese, ducks and chickens had all already evolved when the dinosaurs went extinct. They are all tough hombre.
Scavenging for food, digging up any available crops and planting for next year.
ZX81, couldn’t afford games so learned to program, wrote little graphical adventures using a text map.
The amount of acorns produced by oak trees varies from year to year, every few years they produce far more than the squirrel population can eat meaning many acorns are lost and can propagate. It’s called a mast year.
Pterosaurs also independently from mammals evolved a form of hair.
There’s also the fact that throughout the history of civilization we have to spend more time working to exist as population density increases. India 70 hour average working week, European cave man 20 hour working week, one mammoth is a lot of food.
Trendies, hipster chicken?