Sort-of memes that are cracking you up at the moment

Would that actually fool anybody for a second? She'd have known as soon as she walked in that it was a screen not a window because of the absence of parallax.

You're not wrong, but not really right either.
We take things for granted. We see what our mind wants us to see. We teach our brain to fill the gaps. That's why if you want to draw or paint, you have to forget what you know about the world and copy what you can actually see. It all depends on the predispositions of our brain (you know, the left vs. right side), so some people can't even tell that I spent ten fucking quid on a haircut.