“Good job” is polite. “That third point you made changed my mind” proves you were there.

General praise is easy to give and easy to discount, because it could have been said to anyone. Specific praise cannot be faked without having paid attention, so it carries its own proof inside it. That is why one precise sentence lands harder than five warm ones. The person hears that you were genuinely there.

Upgrade one compliment this week. Instead of saying the presentation was great, name the moment that worked and what it did to you. Ten extra seconds, and people remember the specific ones for years.