Charm is a skill. Trust is a track record. Don’t mix them up.

Charm works on first impressions and measures only one thing: whether somebody is good at being liked. That is a real skill, often learned by people who needed it, and it says nothing at all about whether they will keep your secret or show up at six in the morning. The confusion happens because charm feels like evidence. It arrives with warmth and eye contact and a sense that you have known them for years.

Separate the two questions deliberately. Ask what this person has actually done over time, not how they make you feel in a room. And give the quiet, slightly awkward, extremely reliable people a fair hearing.