If intelligent people talk sense then it is only fair to assume that those who are wise are stacking up on as much knowledge as they can.
[Experts] know that people are paying attention to them, and that has two consequences. First of all, they know that their reputation is on the line every time they open their mouth—that everything they say will be subject to scrutiny. Secondly, they also know that people will put a lot of weight into what they say and probably act upon it, so they feel a strong sense of responsibility to provide good information.
If people who lack sense need to be punished, then it is only fair to assume that when those who lack sense speak, trouble is not far off.