I had a number of thoughts, and realized that the common factor in my examples is this: Large numbers. Like, really large numbers. I read on Lemmy yesterday that parrots can count to 17, and I'm not convinced that humans can do much better. Maybe close to 1,000 at the far outer limit, but that's really it.

Lots of humans deny evolution, saying that there's no way that we evolved from the same ancestors as other primates, but we think that the pharaohs in Egypt ruled a really, really long time ago. So while we can see changes pile up down the generations even in our lifetimes, we have a hard time extrapolating that to such timescales as 12 million years since the last common primate ancestor. Our little primate brains can't even begin to conceive of it, much less the ~180,000,000 years of the Age of Dinosaurs.

Lots of humans deny climate change and pollution, saying that there's no way our small consumption can affect a planet so big. We just have no intuitive understanding of how eating a hamburger, or burning a gallon of gasoline to get to work, scales to 8 billion of us.

And let's not even get into wealth inequality, except to say that surveys regularly find that humans can't even begin to conceive of the magnitude of the wealth gap.