First, the word you're thinking of is "demonstrating," not "proving." But let's get to the big stuff. Since we are being snarky, what's with "Mr. Stallman"? Is

First, the word you're thinking of is "demonstrating," not "proving." But let's get to the big stuff. Since we are being snarky, what's with "Mr. Stallman"? Is he your high school math teacher?