Have you ever watched someone try to persuade others to their opinion? Are people perfect evaluators of facts and reason completely impervious to the negative

Have you ever watched someone try to persuade others to their opinion? Are people perfect evaluators of facts and reason completely impervious to the negative affect of the persuader? Or is it more common people go along with a emotionally-resonant personality and dismiss their reliance on facts and figures based on intuition? You can be sure when I buy computer parts, numbers are the bottom line, but what if an ad for, say, an SSD offered a great price and excellent performance. Would you still buy it if next to the price tag, it said that if you did so, you're pathetic?