Drinking beer in a plastic cup is completely different from drinking beer in a glass. Plastic not only tastes different, but also has low thermal conductivity, which makes it feel warmer in the mouth than glass and reduces the pleasure of drinking cold beer. In addition, plastic is much softer than glass, and will soon lose its luster, be covered with scratches and become opaque, which will not only cover the bright color of beer, but also give us the impression that glass is unclean. One of the great charms of glass is that it looks crystal clear, even if it is dirty, it looks clean, which makes us willing to accept collective hypnosis and will not think that this glass may have been touched by someone else's mouth an hour ago.
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