

A lot of smart people, scientists even, would be inclined to say “I don’t know if it’s true” with the key word being “know”.
If they’re not familiar with the literature and they’re being exposed to a claim for the very first time, they’d potentially want to consult the research on the matter. (Not “do their own research”, but to look into respectable research done by professionals)
Like all that raw milk stuff? I’ve got no clue what that’s about. And if the claims are like “Raw milk promotes the maintenance of healthy bones and teeth better than homogenized milk” or something, I dunno man. I’ve never heard anything one way or the other. “I don’t know if it’s true”. I might even be leaning towards disbelieving it, but I don’t know.

I’m not sure if 1/4 to 1/3 of people being gullible is staggering to me