We don’t see at all. Light hits the back of our eyes. Our eyes send an electrical signal to our brains. Our brains reconstruct a model of reality based upon those signals. That mental reconstruction isn’t reality - it’s a fabrication of reality. And not e very accurate or detailed one either. Our brains fill in the missing details with a lot of assumptions.

[quote]Edit: do any of you read before commenting? I literally just proved depth perception to be an assumption your brain makes.[/quote]No. In fact, I stopped reading at "Let's say you have a ball"...

I had to stop watching the video. I can only take so much stupidity without taking some of it on. Thanks for the laugh though.

No, you're wrong. Show me an object that can grow at the same rate of it moving away. You can't because there isn't one.

[quote]How do I know this? Let’s do a little experiment. Let’s say you have a ball in the distance. It’s moving away from you but at the same time growing at a rate that makes it appear the same size. How could you possibly tell the difference (assuming the lighting doesn’t change the shadows) between an object 5 meters away and an object 10 meters away but twice the size? Well, you wouldn’t. Edit: do any of you read before commenting? I literally just proved depth perception to be an assumption your brain makes.[/quote] [well, assuming we don’t have depth perception, it is correct we wouldn’t because we would have to assume the ball is the same size and unmoving until it reaches the location and size of an object we know to be larger than the ball. But, depth perception is a natural part of our vision, which allows for “3D” vision and the knowledge that the ball is both moving and growing. That’s my theory on the proposed question.]

I think your example would only work on a photo, we have depth perception that can judge distance based on focus, it's all subconscious but we do it. Else if we saw an object in the distance we wouldn't be able to judge its size and distance would we? We can do that proves we see in 3D

Humans have natural depth perception. We trick it with drawings amend movies by manipulating lighting and size

According to the laws of scientifically possible This is due to depth perception

We can see 3D but with only one eye we see in 2D because we have no depth perception. Bonus fact: It is impossible for something to exist in 2D or 1D[spoiler]at least theoretically[/spoiler]

Dude