"The point: it's easy to forget that what surrounds you is only normal because it's what you know. To others, those surroundings might seem pretty strange."
This is a little off topic specifically... When I am really stressed out, I have a tendency to forget about everything going on around me, and just focus on me, and my stress. It's like being in murky water with junk floating around in it. I focus so much on myself, and the things happening to me in the immediate present - more of a mechanical response to stimuli, like some kind of a survival instinct. I completely lose sight of the future, and can't see anything else happening around me. Just me, stuck in the murky water alone.
Also, when I get stressed out, I apparently misplace things. I found my wallet in the freezer a few days ago, and this morning put my glasses in the dishwasher. Wallet is fine. My glasses got all bendy and look like they belong on a wax figure from Ripley's Believe it or Not.