I strike up conversations with the oldest people who work there, we talk about machine vs. carriage bolts and whether to use a compression or a flare fitting. If they’re really good, they don’t hassle me. They let me wander around and think. Young hardware clerks have a lot of hubris. They think they can help you find anything and they ask a lot of stupid questions in the process. Old hardware clerks have learned the hard way that nothing in a hardware store ever gets bought for its nominal purpose. You buy something that was designed to do one thing, and you use it for another.