|Drugs? Retardation? Fetal alcohol syndrome? Little of each?|
Admittedly not all retail workers need much in terms of mental abilities. The cart pushers, the door greeters, shelf fillers, and a few others, can be mostly without higher brain functions and perform their tasks just fine. Walmart and Target have taken this idea to its logical extreme.
Some retail workers seem to have something wrong with them. While some simply seem to be high, other seem to have more serious problems. In the retail game, there seem to be a lot of mild retardation. Some of them seem to have both going for them. Remember, don't move to fast around them, they might become aggressive.
Clearly these people have it bad, so we should try them with kindness. Don't take out your frustrations on retail workers. Instead take them out of children screaming in the store.