Say I'm persuaded by your opinions on the WTC disaster, do you have a clear alternative explanation?
Good question. The short answer to it is no - not a clear or definite one. And if I did claim to know what happened, without there having been a transparent, impartial, thorough investigation without foregone conclusions, then I would hope and expect that it would be vigorously challenged.
There are plenty of ideas out there, ranging from the incomplete but plausible to the frankly ludicrous. I would be surprised if high-status people living and working in America didn't have something to do with it. The level of involvement (from careless or deliberate overlooking of information to more active planning) I am less sure about.
A response of "This is a terrible event, and while we don't know what happened yet, we're going to investigate it properly, thoroughly, impartially and openly" (as, incidentally, many affected families have tried desperately to campaign for) would seem appropriate to me. We are not good at dealing with uncertainty (and often fill the void with crazy theories and stories, a tendency exploited to the full by government-influenced media), but sometimes that is what we have.
The one thing I'm pretty sure we will agree on, Culture, is that it was a truly horrific, tragic, event with heartbreaking consequences. For it to then be manipulated as it was, as a political reason to invade and kill people across the globe, is terrible beyond words.