WMD in Iraq as the pretense for invading. That to me, was a conspiracy. The "evidence" seems to have been clearly orchestrated from the very top of the Bush administration. It seems evident that George Tennant was forced, or perhaps strongly coerced to a acumulate information any way he could to substantiate the claim that yellowcake uranium was purchased to make nukes. Then Colin Powell testifies to the UN that we must... Blah blah, smoking gun, blah. I'm not much of a conspiracy guy but only because I'd be over consumed by my attempts to uncover the truth. My guess is that many "conspiracies" are accurate and many are partially accurate and some are bunk. But I don't think anyone's "crazy" for holding an unpopular opinion. Those people are often vindicated by time. Edit: Did I misunderstand the question? Are you asking what our definition of a conspiracy is?