Bob: “Yes, and he’s also only ever been nice to me, but many of our friends report him being bad to them AND being horrible to people who he seems to consider ‘beneath him.’ I trust our friends, and so I’m worried about the possibility that Charlie is specifically kind when he’s around us.”
Alice: “Charlie isn’t the type of person who would do that. I can tell.”
A related example from my own life:
Bob: “You should be wary of Charlie.“
Alice: “Why? He’s only ever been nice to me!”
Bob: “Yes, and he’s also only ever been nice to me, but many of our friends report him being bad to them AND being horrible to people who he seems to consider ‘beneath him.’ I trust our friends, and so I’m worried about the possibility that Charlie is specifically kind when he’s around us.”
Alice: “Charlie isn’t the type of person who would do that. I can tell.”
Bob: “…”