The one thing I was wondering about concerned the discussion of how a CD works when it is spinning in a machine and how it can be damaged, apparently pretty easily, by a hair, dust particle, etc. Why couldn't there be some type of protective coating or CDs be made from a different type of material that isn't so easily damaged? Perhaps using other materials to make a CD would be cost prohibitive but they have been around for quite some time now, so the technology probably shouldn't be as volatile as it is.
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