This was fun. Here's my test session: https://debunkbot.com/chat/48a5ac29-2924-4689-b573-2c38a1cdd...

I don't know which model underlies this. It responded more quickly than the models I normally use. It made the mistake I expected it to make, since this misconception is very common in training data, and conceded the point from my follow-up.

(EDIT: It appears that this link is not accessible to people without my cookies, except the developer I'm responding to above.)