Anything not about languages or computer science.
My Book Shelves
Comics The Buffyverse, Cult, Novels, Mind, Psychology, etc., Miscellany.
There are also (larger) "My Bookshelves" about
Computer Science (until 2012).
How a Light Saber Works
A physically feasible but technologically challenging design proposal.
A Simple Solution to Rubik's Cube / De Hongaarse kubus ontward
Uses only 6 operators.
Miscellaneous about Yoko Tsuno
Miscellaneous / Dick Grune /
... and my name is not Richard ...