Hi-tech palimpsest ping
Thanks Hegemony Cricket. I remember a show, Cronkite did it, called “The 21st Century” — one segment showed a typewriter (whatever that is) which used a laser to erase mistakes, a capability which was used “on the go”, since we didn’t have such cushy computer equipment and the like back then.
The laser used to be dubbed, “the solution in search of a problem”. Imagine. :’)