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I read the article, as well as a significant number of the response letters, and was astonished at the narrowness of the responses.
The one thing that kept popping into my mind was an Arthur C. Clarke quote - "Any sufficiently advanced technology is indistinguishable from magic." The bigger point this article makes, and that practically no one responded too, was the issue of young people not really understanding what is happening behind the scenes of just about anything these days.
Try it yourself. Ask someone how practically any modern device works, such as a TV, or a CD player. The most frequent reply is a blank stare.
Clearly, some of this is due to lack of interest, but a lot of it also has to do with people not being exposed to actually getting their hands dirty doing these things nowadays. You can't tinker with today's devices the way you used to, and if you can, it's more convenient to have someone else fix or install it.