A small collection of jokes that, by their very nature, cannot be told out loud; they have to be read. Otherwise the ambiguity that arises from the way they are written (e.g. «10» as binary or decimal) is given away and the joke falls flat — hence “read only”.
10 kinds of people
There are 10 kinds of people: those who understand the binary system and those who don’t.
Alien & astronaut
An alien and an astronaut are in the frame; in front of the alien lie 4 stones. The following exchange takes place:
Alien: I have 10 stones in front of me.
Astronaut: Ah! You must be using a base-4 number system — here on Earth we use base 10.
Alien: No, I use a base-10 number system. What is 4?