No, I'm not saying that people shouldn't be speculating.
What I'm saying is that if people read the entire thread, they'll see that "Sam Webb said it isn't X because of _________________" and blah blah blah, and therefore people wouldn't have to explain that "Sam Webb said it isn't X because of _________________" twenty times.
Too many people are wrapped up in guessing, rather than reading. Then you end up with a thread that's 220 posts longs when 50% of them are repetitively redundant.
There's an old saying that goes, "If your mouth's open, you're not learning." Maybe people should spend more time reading than opening their mouths (or, in this case, typing).