December 23, 2025
Schrödinger’s syllabus
Carnap – A formal logic framework for Haskell
Carnap: Haskell’s logic tool—genius for class or ghost app? Folks argue over the name
TLDR: Carnap is a free Haskell-based logic tool used in college courses. Commenters argued over whether it’s quietly stale, griped about naming it after a real person, and one pushed a Python alternative—making trust, discoverability, and language wars the real story.
Carnap is a free framework built in Haskell to teach formal logic, and the site says it powers courses at dozens of universities. Sounds wholesome—until the comments turned it into a campus quad shouting match. One user squinted at the timestamps and dropped the grenade: “Dead project?” Meanwhile, a naming fight erupted when another complained about software named after real people, saying it makes search a nightmare. Cue a helpful history buff linking the origin to philosopher Rudolf Carnap like they were stepping in with a textbook.
The thread’s funniest moment? Someone invoked “documentclass: script, letter, report” and the crowd joked they’d mixed logic tools with a word processor, imagining professors writing syllabi in Haskell. Then came the plot twist: a commenter plugged a Python alternative with docs here and a shiny GUI at taut-logic.com, sparking a mini Haskell vs Python cage match.
The strongest opinions split into two camps: educators and fans who love a tried‑and‑true classroom tool, and skeptics who won’t touch anything that looks stale. The naming drama added spice, with memes about Schrödinger’s courseware—alive in universities, ghostly on GitHub—and the eternal question: is it hard to find because of search, or because it’s sleeping?
Key Points
- •Carnap is a free and open software framework for formal logic.
- •It is written in the Haskell programming language.
- •The framework supports logic courses at dozens of colleges and universities worldwide.
- •Students in courses using Carnap should log in via site links to access materials.
- •General information is available on the about page, and educators can contact the project to get involved.