glthr.com | Guillaume Lethuillier's blog

As Donald Knuth has just published Volume 4, Fascicle 7 of The Art of Computer Programming (TAOCP), on constraint satisfaction, I would like to provide more information about the errors I discovered in 2019 in other volumes, for which I received two Knuth…

This is the fourth installment in my series on delimiters in languages.

This article, by Guillaume Lethuillier and Twitch, is also published on Twitch’s website (which contains additional images by combining animated diffs, highlighted diffs, and pairs of original images).

This is the third installment in my series on delimiters in languages.

Riven as Series of Cards The original Riven (1997), the sequel to Myst, was developed for the Mohawk engine, resulting in game files stored in a proprietary format.

(All opinions herein are solely our own and do not express the views or opinions of our employer.)

ℹ I am pleased to announce that I will be presenting the Myst Graph at Mysterium Con 2025, in Atlanta, GA, on August 2nd.

The Myst Graph is generated by DeMystify, now an open source Go program: github.com/glthr/DeMystify.

Introduction Previous analyses of Myst’s source code have indicated that some assets are not seen in the game, such as Catherine’s crumpled note and the opened music box in the Mechanical Age.

Upon reflection, Myst has long been more analogous to a graph than a traditional linear game, owing to the relative freedom it affords players.

Delimiters Between First-Order and Higher-Order Expressions In a previous article (that I recommend reading for context), I introduced the general idea that delimiters marking transitions between first-order and second-order expressions are fundamental to…

↘ In October 2024, Jane Street released a “Knight Moves 6” puzzle.

There seems to be a pattern in languages (in the broadest sense in the context of this article: a series of symbols that are evaluated or interpreted): a duality between first-order expressions and second-order expressions that have different purposes but…

↘ In May 2024, Jane Street released a cross-number puzzle, “Number Cross 4” (official solution).

↘ This article presents our recent discovery of a pattern in Kryptos K4, the famous unsolved code.

All opinions herein are solely my own and do not express the views or opinions of my employer.

All opinions herein are solely my own and do not express the views or opinions of my employer.

All opinions herein are solely my own and do not express the views or opinions of my employer.

Developers must carefully balance the amount of information provided in error messages displayed to end-users.