You can say that Ron Wyatt is a crackpot, but you won't KNOW that he's a crackpot until you've gone to one (or all) of his supposed findings and find not
Probably true. However, I can be sure far beyond any reasonable doubt the he was
1 a crackpot from the evidence I've seen already. I feel no need to investigate further to get rid of that last 0.000000000000000000000001% possibility that he wasn't a crackpot..
1Ron Wyatt died in 199, so you shouldn't refer to his investigations in the present tense.