Are things really THIS BAD? Math is one of the only two things that I'm actually good at doing. I make my living doing math. Anyone who doesn't understand mathematical logic as opposed to English language logic will not get hired by me.

The sentence "All dummies are not stupid" implies that they are all smart. Say what? "Not all dummies are stupid" implies that some are smart, and some aren't. That might work for writing, since English majors tend to skip over this, and just let it go. But try telling me that "not all green jellybeans are yellow." By definition, none of them are yellow! Not one single green jellybean is yellow, so don't even try to tell me that some are, and my logic is wrong because I'm approaching it from a mathematical perspective. This is why English majors don't program computers. Make a logical mistake like that when you write source code, and you screw up the whole program.