Caveat to those who might think LH is being serious - he knows better than to disparage anyone based on gender - or hair color, either, really. Ma'd zap him with a lightning bolt from heaven if he was serious.

Moosmom, and everyone - ignorance is always taken advantage of by the unscrupulous. As was stated before, READ your owner's manual. Technical writers put a lot of effort into making them understandable to average people.

Educate yourself, that is your only defense. And ask questions, and pay attention to the answers. Write things down if you have to.