While I understand Bosk's point of talking past each other, let me just say this, you can't simply state something like Tick has and just expect people to take it as you've seen it. You can be as sure as you like, but that won't make people believe, and when it's a sketchy subject, people are going to look for more plausible explanations.
For example, when I was 12 years old, I was at this club, they let me in underage because they saw how awesome I was. Anyway, it was a long time ago, and the club wasn't well lit as they had all the crazy lights going, and I was 12, but I know what I saw. There, 25 years across the dance floor was the king himself, Elvis Presley. I know a lot of people say he's dead, but you can't argue with what I saw, because my eyes KNOW it was Elvis Presley himself.
This would then spark criticisms that I was 12, that it was poorly lit, that we don't know what Elvis would look like today, and that there are impersonators everywhere, but as long as I hold firm to my position that's what my eyes saw and there is no 2 ways about it... well... frankly I've set it up so there is no discussion to be had.