NessoAsks
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In a classic Doyle tale, Sherlock Holmes could tell a man was a drunkard by looking at his pocket watch. If the winding keyhole had scratches around it, the man would miss a few times when he went to wind it, scratching it, and therefore was intoxicated.
In at least one modern version ("Sherlock"), it was scratches around the charging port of the man's phone.
What would Mr. Holmes conclude about virtually the entire population after examining the state of the USB ports on our laptops?