I like the way that fcastle analyzes this situation. But I think there is a flaw there too.
Whether 99% or 1% subscribe to a certain belief is irrelevant. Just because you're in the 99% crowd does not mean you are immune from justifying a certain belief. After all, as it stands right now we don't know what happened to DB Cooper. And at some point even the 99% need to consider that maybe they're wrong.
I have put forward a theory. I have explained the reason for the theory, the evidence I use, and my methodology. What else can I do? Not theorize at all? Not question that which should be obvious by now: i.e., Something doesn't add up.
An analogy is looking for my car keys. I swear I remember walking in through the garage and placing them on the kitchen counter the last time I drove the car. Yet, after 30 minutes of looking all over the kitchen counter, and on the floor, I cannot find them. 99% seem satisfied with saying, "I remember walking in and placing them on the kitchen counter. And, me being a witness to my own actions lends credibility to my belief and me." Yet, eventually, after what is now an hour of looking for the damn car keys I'm going to stop and actually ponder the notion that I made a mistake. Perhaps my memory of what happened is wrong based upon what I usually do or because I got distracted or for some other reason. Perhaps, just perhaps, I actually left the keys in the ignition, or in my jeans, or in the office, or threw them in the trash. Yes eventually, even me, a solid 99%er, who knows I left the keys on the kitchen counter, is going to have to ask myself, "Why do I think I left the keys on the kitchen counter? Is it possible I am wrong? Where would I have made the mistake?" After all, I want to find my damn keys.