Dealing with a VERY small sampling, I've come to realize the study (which has been around for a couple years at least) is true.

In my civilian job I am an electronic tech. I'm fairly skilled at it, but know when I need help, and have no problem asking for it. The people in my line of work who never or rarely ask for help are the people we dread following, because we never know what they did to the machine. We have one machine in our plant that might as well be scrapped when the person who maintains it retires, because he has filled it with jumpers and quick fixes to bypass problems rather than try to find the real problem and fix it. A card failed in the machine one night, and when we replaced it (to spec, according to the factory schematics) it immediately went up in a puff of smoke. We had to probe all the connections with a meter to find out what actually went where. According to _______, he's the best tech in the postal service. Evidently so good he doesn't need factory specs.