I think the most important lesson you have to learn before discovering new Rust becomes easy is that edge cases matter, because formal descriptions almost never start with the most visible attribute; they start with the strongest one.

Almost every datastructure is Unpin, or should be at any rate. The benefit of Pin is that you can get rid of that *almost*, and define your operations for arbitrary sections of program state.

I wish it was possible to unpin archived chats in WhatsApp WITHOUT opening the folder. Because I don't want to see none of the stuff the people whom I archived (possibly) wrote me