Carrie's Tip-O-the-Day

Have you ever seen anyone go full speed at the mall into a door only to be stopped dead in their tracks because they pushed on the wrong side? Well, here's my tip-o-the-day so you don't look like that fool. Look for the side of the door with the lock on it! Then you know that's the side of the door that opens. Easy as that. Is this something you all do already?