A few years ago, during an annual United Way community service day, I asked a volunteer if he knew anything about computers.
The desktop we offer for public use at our Hillman City Collaboratory Drop-In Center had been malfunctioning.
The volunteer, who had been busily working with his hands to assemble a shelf, said he was adept with computers and would take a look. That afternoon, he told me he had easily diagnosed the problem and had optimized its performance. Indeed, the computer now ran like a champ.