We've moved from foot to horse, added buggy and then on to cars. We've moved from scratching petroglyphs on rock to etching lines in clay tablets to scratching lines on paper. Now we email short notes far more than we ever wrote postcards and letters.
Days go by.
We like that paper. It feels permanent. The ink on paper feels permanent. We can tell who signed. We can sniff it, hold it to the light, consider whether it has been changed.