BK117 writes: "When I first saw the news releases for this amazing material (in the early 1990's) they said it would revolutionize refrigerators, hot water heaters and many other devices needing lightweight insulation. Well, I have yet to see any consumer-level appliances using aerogels. Why not?"
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After the last of 16 mounting screws has been removed from an access
cover, it will be discovered that the wrong access cover has been removed.