Rafe Meager (they/them)
5mo
A case study in how Cowen's uncritical use of GPT/o3 is causing him to spread misinformation on Marginal Revolution, from @pappubahry.com pappubahry.substack.com/p/misinforma...
A long read of using ChatGPT for research, which has wrong information, and then publishing it in a blog which further cements the information even though it links only to ChatGPT output.
The author David Barry attempts to verify where the info came from and mostly debunks it. M
Subtitled, “A case study in o3 hallucination”.
A case study in o3 hallucination
https://pappubahry.substack.com/p/misinformation-on-marginal-revolution
The piece ends by using the GPT-5 to debunk the previous work:
If you’ve seen the recent claim pinning this on Berthold, it appears to trace to a July 31, 2025 blog post that (unhelpfully) linked to ChatGPT as its “source,” not to any primary document. Treat that as a rumor.
David Barry concludes: “It remains bad practice to cite ChatGPT without verifying its output.”