Moonbear: Obviously, the type of discussion to which I was referring was the type of discussion for which very high reading comprehension is required--an argument. Used more broadly, "discussion" can mean other things. But because the "parent" subject was the reading comprehension requirement for a contentious discussion, the sense of the word "discussion" in use was this:
http://dictionary.reference.com/search?q=discussion
2. A formal discourse on a topic; an exposition.
An informal commentary on a picture is not a formal discourse.
What I noticed while taking notes was a hint of the ambiguity. If you simply write the word, "force," in neat, clear, cursive, it can be interpreted as "foul" provided that the e is slightly larger than normal, which was in fact the only abnormality the original time I wrote it.
Also, you should have realized that the only thing depending on the f - L ambiguity was the interpretation of "love." The original "force-foul" interpretation does not depend on the f - L ambiguity, but rather on the fusing of the r and the c into the letter u (which is interesting, as it is a two-letter ambiguity), and the reading of the final letter as an L.
Also, my use of the word "nitwit" was clearly in jest, as you could tell from the context. And I did not call anyone an idiot, simply ask rhetorically and incredulously if that were the case (the implied answer to the rhetorical question obviously being no, the people here are not idiots, and the point being that they are acting foolishly in this case). Both of those cases were a reaction to people criticizing my carefully made image without a single good word.
Furthermore, the fact that in the original image the first letter was more difficult to read as an f is the reason why the words "foul" and "force" in that image were subliminal.