Found in 4 comments on Hacker News
floxy · 2024-05-10 · Original thread
Ah, Gensler. He wrote a great little book on Godel's Theorem:

GregBuchholz · 2017-01-18 · Original thread
I liked "Godels Theorem Simplified". Although it looks like it is now a lot more expensive than it used to be. Maybe get it through and interlibrary loan.

GregBuchholz · 2012-05-18 · Original thread
I always liked "Godels Theorem Simplified". It doesn't rely on heavy technical prerequisites in mathematics or CS. It is pretty much as advertised, a simplification of Godel's original proof. Godel used a more complicated encoding scheme using prime numbers, which Gensler replaces with a simpler encoding scheme. He walks you through various less powerful formal systems, before you get to one complicated enough to have incompleteness issues. There is also discussion about the philosophical ramifications of Godel's theroems.

"Godel, Escher, Bach" is another interesting read, but that volume does have a lot of extraneous fluff.

Fresh book recommendations delivered straight to your inbox every Thursday.