At the time, the business mangers made all the hiring decisions, even those in tech support. One day they asked me to start training a new person who had been hired for my department. They told me it should be pretty simple because he "knew his stuff."
I wanted to get a sense of the tech recruit's knowledge, so began by setting him down in front of an old PC and asked him to remove the power supply, add a hard drive, and install more memory. He fooled around for a while and finally got the screws out so that he could take the back of the case off. But then he just sat there, looking in the box.
After about 10 minutes, with no activity from him, I asked if something was wrong. He said, "Well, my mama always told me that if I didn't know what something was, not to put my finger in it, so I'm just going to leave now."
I agreed with him.