The Fluidity of Smart
With most individuals, being smart or being stupid is not a fixed status. Most of us have been brilliant one moment and dumber than dirt two minutes later. We can be impressed by someone who is very smart most of the time and yet that may be related to the specialized dealings we have with the person. Get them outside of their specialties and see how they sound.
We need to beware of prejudices and labels and yet maintain the ability to make judgments. I find this to be especially important when people are overly impressed with college degrees.The person who cleans up the classroom may surpass the professor who teaches in it if we are looking for a practical solution to Iran or the national debt.
It makes sense to take people as individuals and then evaluate that individual in the moment.