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I grabbed this photo while visiting my dentist the other day. I thought it was a perfect example of what happens to old technology. This is one of the old mail chutes that people would drop 'letters' in. I know, how quaint. Taking crushed up and dried trees, writing on them and then loading them into trucks and shipping them around the planet. I like how the old mail conduit now has networking cable run in it. Seems ironic.