At least it is in terms of a spectrum. Everybody finds orange text on a red background uncomfortable to read. So there are plenty of shared perception categories at least

[–] erev@lemmy.world 1 points 11 hours ago (1 children)

i think the best example of this is music. most people have very good relative pitch perception, but mediocre absolute pitch perception. that shared relative pitch perception though will often be built based on ones own experiences and life. the shared perceptual relativity is both developed socially/culturally and innate based on how we process and abstract information, but that says nothing about our absolute perception of that information.

[–] NKBTN@feddit.uk 1 points 10 hours ago

Its interesting. We can both look at a landscape and agree there's two mountains in the distance and a forest in front, and can agree on a thousand further details like if the mountains are barren or snow-topped. But only when it comes to colour can we doubt whether what the other person sees is what we see. To be fair, the artist Monet did that experiment on himself. Painted a scene with one eye open and the next day with the other. Details are pretty much the same, but the spectrum is pretty different