If the evidence is only your say so, then it is flimsy.
But if the evidence has been scrutinized by several rational people that are familiar with the scientific methods, then their conclusions have more weight than your say so.
Off Topic » in reply to "What I'm asking you to do comes down to believing, in the absence of evidence, on my say-so. "
But if the evidence has been scrutinized by several rational people that are familiar with the scientific methods, then their conclusions have more weight than your say so.