You’re a sub.

I did this, it’s a great place to start.

That’s why Primer is my favorite depiction of time travel. Machine turns on at your destination time, you get in at your departure time, and it spits you out in the past. This sacrifices freedom of travel (you can’t go back to before you first turned the machine on) to solve the point-of-reference problem (the machine moves normally with the Earth).

Yes, three dimensionally. Pull it up, and make a fold from the sewn point of the fitted corner parallel to one folded edge, and then the other edge likewise parallel to the remaining side. Now that you have a nice rectangle, lay the bunched portion down as flat as you can, and continue folding. Ta-dah.

If you pull up the fitted part, you can establish parallel sides so you can form it into a rectangle that can be folded neatly

Do adults really not know how to find fitted sheets? You fold it basically like a regular sheet, but tuck the corners inside each other.