You've caused me to look much more closely at Moore than I would've otherwise had reason to. And sad to say, his work is much worse than I thought (hadn't even realized that could be possible, truthfully).
I don't know. maybe. what did he screw up with Columbine? i'm sure it was something with info about the kids.
No, I think it's more than a maybe. Because as shit as 911 is, it is actually held as an example of Moore correcting his movie-making practices from Columbine. A real laugh, I know, since both movies are worthless.
If you look for examples of dishonesty in Columbine, particularly, though, you'll quickly find so many that it becomes ridiculous. He pulled SO much bullshit in the movie, that it is 100% unacceptable. As a matter of fact, it's insulting for him to expect anyone to watch it, considering he made it up as he went along. And while 911 may have been a step up from
that, it doesn't say much.
So...since you watched Columbine and are probably interested in particulars, I'd suggest you spend a little time looking at the aftermath. You might learn something about yourself and why you fell for it. If you're concerned about having to sort through lies over lies, a good starting point might be David Hardy out of Arizona (hardylaw.net). He is careful with what he says (unlike practically every other person on the planet these days, it seems). Unfortunately, he just scratches the surface against the huge amount of information available - but there are only so many hours in a lifetime, I guess.