In military terms, the anabasis, the going “up”, was historically the march from the coast to the interior, and so the katabasis was the return march.

By the way / You've been uninvited / 'Cause all you say / Are all the same things I did

In the year 1346, at the battle of Crecy, the engliſh uſed a ſort of cannons, which were then called thunder-boxes.

I see it this way: When I was a kid I was bookish, extremely literate for my age, the usual cliched embryonic SF reader. Of course, the oiks didn't want to know about me, and those that did only wanted to beat me up. So I avoided the thickos and sought my own kind. When I think of kids when I was a kid, I'm thinking of those relatively smart librovores that I mixed with.