Well, it's a bit of a spoiler to encounter this video in this context, but this is a very good video: https://www.youtube.com/watch?v=LRFMuGBP15U

Even having a clue why I'm linking this, I virtually guarantee you won't catch everything.

And even if you do catch everything... the real thing to notice is that you had to look. Your brain does not flag these things naturally. Dreams are notorious for this sort of thing, but even in the waking world your model of the world is much less rich than you think. Magic tricks like to hide in this space, for instance.