I'm not sure how old is old, but I've been much more frustrated by those that most would consider young. A few weeks ago, I stopped at a Milwaukee area Radio Shack to pick up a crossover cable. In the effort to find one, two confused employees in their 20s tried to tell me that all Ethernet cables are the same. No, they're not. I found the right cable, showed the employees the various packages, and explained to them when they're supposed to sell a crossover cable and when they should be selling a patch cable. They're totally not interchangeable. That Radio Shack experience was an exception; they're usually pretty good. Best Buy employees, usually in their 20s and 30s, are another story. A few weeks ago, I overheard an employee in his early 20s telling customers that a Mac computer is difficult to use. It crossed my mind to jump in with a diatribe (centered on dealing with malware) that would have made him look pretty dumb, but I refrained. He was already looking pretty dumb on his own, and I think the potential buyers could see that. Last week, I was looking at an external hard drive that connected via USB, Firewire, and ATA. I wanted to know what kind of cable I'd buy to connect via ATA. As he had no clue, his response was, "Why would you use anything other than USB?" I should have said, "because it offers that option and if I knew how much I might be investing in a cable, you might sell me the thing," but I was too nice.