Thread: Why did we evolve to see things like this illusion?

I was recording an attempt at art, and I realize that I ran into one of those illusion images. It makes me wonder how evolution got this wrong, or is there an advantage to this.

https://youtu.be/txNKJFgdH1Y

Fast forward to the end.

Mute it though, there's an annoying background noise.

Originally Posted by Utopian

I was recording an attempt at art, and I realize that I ran into one of those illusion images. It makes me wonder how evolution got this wrong, or is there an advantage to this.

Neither. It's merely an artifact of how our eyes and brain work. (We reference things nearby to determine straightness.)