Who here is old enough to remember hardware stores that had a light bulb display that incorporated an active bulb socket such that a customer could test any bulb they were about to buy? The socket had smooth sides (with no screw threads) and one could simply push a bulb into it to see if it lit up. Even as a young kid of 9 or 10 I knew how potentially dangerous that was, and even though I had a curious temptation to stick a finger in it, I never did. Eventually, those bulb testers started to disappear, perhaps because of casualties I never heard about, but still for good reason.
Who here is old enough to remember hardware stores that had a light bulb display that incorporated an active bulb socket such that a customer could test any bulb they were about to buy? The socket had smooth sides (with no screw threads) and one could simply push a bulb into it to see if it lit up. Even as a young kid of 9 or 10 I knew how potentially dangerous that was, and even though I had a curious temptation to stick a finger in it, I never did. Eventually, those bulb testers started to disappear, perhaps because of casualties I never heard about, but still for good reason.