Lessons you learned from randos?

A lot of us have been playing this game for a very long time. I started in season 2 when Diana was released, and I've heard many players say many things over the years. Though most of it has been rude or inaccurate, every now and then I've had an interaction with a random stranger that stuck with me and taught me something.

For example, several years ago I was building Cho'Gath incorrectly and someone told me "resistances > health on cho," which is pretty simple advice, but the way they said it just stuck with me. Now I think about it every time I play Cho'Gath.

Are there any lines or pieces of advice you picked up from randos over the years that you still think about today?