All corrections
Substack March 5, 2026 at 03:15 PM

www.astralcodexten.com/p/mantic-monday-groundhog-day

2 corrections found

1
Claim
Crypto traders have invented the perpetual future,
Correction

Perpetual futures were proposed decades before crypto markets—Robert J. Shiller proposed a “perpetual futures contract” in a 1992 Cowles Foundation discussion paper.

Full reasoning
The post credits “crypto traders” with inventing the **perpetual future**. But the concept predates cryptocurrency markets by decades. Economist **Robert J. Shiller** discussed and *proposed* a **“perpetual futures contract”** in a Cowles Foundation discussion paper published **November 1, 1992**. Crypto exchanges later popularized *crypto* perpetual swaps/futures, but claiming that crypto traders **invented** the instrument is historically incorrect: the instrument’s design was described in academic finance literature long before modern crypto trading existed.
1 source
2
Claim
In the late 2010s, a group called Augur raised $5 million for the project but never managed to create usable software.
Correction

Augur’s token sale that raised “over $5 million” happened in 2015 (not the late 2010s), and Augur did launch a main network in July 2018.

Full reasoning
This sentence makes two concrete factual claims that don’t match the historical record: 1) **Timing of the fundraising:** Augur’s initial coin offering (ICO) that raised “over $5 million” occurred in **2015**, not “in the late 2010s.” 2) **Whether software was produced:** Augur did ship a product—CoinDesk reports that Augur was **launching its main network in July 2018**. (Whether any given user found it *good* is subjective, but it’s not accurate to say it “never managed to create usable software” as a categorical statement.) So the post’s description is misleading on the date of the fundraise and incorrectly implies Augur never launched a functioning network.
1 source
Model: OPENAI_GPT_5 Prompt: v1.16.0