Move semantics are so useful and powerful, but so complex. I've read multiple tutorials on them (all of them very long) and I still keep forgetting minor but cr

Move semantics are so useful and powerful, but so complex. I've read multiple tutorials on them (all of them very long) and I still keep forgetting minor but critical details. (You could probably replace "move semantics" in that sentence with multiple other C++ features and still have a valid statement.)