Ughhhh this is the kind of post that hurts me so bad. It's the sort of common sense knowledge that a reasonable person has to hope everybody would already have. It would be so nice if people could just read it and be able to say "Duh.... why waste your time telling us something everybody already knows?"

Then you realize that almost nobody knows it and that there have to be posts like these to educate them. Thanks for explaining succinctly. Common sense ... isn't so common these days.