Via ... a long chain of plusses...

Via ... a long chain of plusses...

Originally shared by Kristian Köhntopp

»From Stanislaw Lem's "Return from the Stars" published in 1961:
The books were crystals with recorded contents. They could be read with the aid of an opton, which was similar to a book but had only one page between the covers. At a touch, successive pages of the text appeared on it.«
-- https://twitter.com/SeraphinaMadsen/status/811251711557926919