I see you've missed vocabulary as well as logic, history and the better part of economics. The word used throughout is "possibility." Not "scenario," not "claim," and certainly not "the only two possible reasons."
If you can't see the difference, then by all means keep digging deeper. I'm enjoying it.
Since you obviously missed it, let me explain my post a little more for the attention-span-challenged crowd. As an example of the false dichotomy, I asserted (note my choice of words, please) that you are an ass because you either:
1. Are blind to anything that doesn't fit your wordlview, and
2. Assume you know everything, as most students do.
Now, THIS presents a logical fallacy of the false dichotomy because you may be an ass for any one or comination of many other reasons: genetics, upbringing, childhood trauma, juvenile detainment, too many Paul Hogan movies, guilt over unleashing Yahoo Serious upon an unsuspecting world, latent Aboriginal oppression guilt, etc. etc.
See the difference?