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The Wi-Fi watch and the topic of useless inventions also continued to garner interest from reader Michael Williams: “A couple of years ago our sales director came over with a great new idea form a client, and invited me to look at incorporating it into our next software release. The client wanted – in case he was absent from his desk when the telephone rang – an electronic message to be sent to his screen by his secretary with the caller details. I asked him to email me the details, but he still didn’t get it. The same director called a developer in because of a fault with a web page. The director could highlight text on the page, but it wouldn’t let him type over it. I was never short of work at that company.”