Christians. Could you be wrong?

[FatAndFaithless]

Huggy, you don't get to make assumptions of that nature either. I didn't respond to your question about dark matter because it had no relevance to the question at hand. That you're trying to sell it as though it does speaks volumes about your honesty. Thankfully, everything here is a matter of record so we can all evaluate it.

"do we accept the truth of the claim purely on the credentials of the claimant?"

the answer is yes when it comes down to matters of science and an expert in that particular scientific field.

That is the literal opposite of what science is. You have a disastrously wrong concept of science and what beign scientific means.