Nah, he's right. I often just end up with "I found parts of this persuasive and appealing, but I can't trust it because those parts are things I don't know much

Nah, he's right. I often just end up with "I found parts of this persuasive and appealing, but I can't trust it because those parts are things I don't know much about, and in the parts I do know a lot about, there were serious issues." It's not that I think I know the rest is bad, too; it's that I know I don't know.