This ^^^E.Marquez wrote:
Takes all kinds, and unfortunately, all kinds put on a cool hat, make up a flashy sign, and fool people into thinking they are a qualified instructor.
Sometimes there isn't any way to know unless they make a stupid mistake. Most of the time those in class to learn dont know enough to call them on it or know something is wrong. What is obviously out of place to us doesn't raise a flag with newbies. That said, one would think that even novices would realize this was wrong.