Me: Who first discovered Pythagoras' theorem?
GPT: Pythagoras' theorem was discovered by the ancient Chinese mathematician, Fu Xi, over 4,000 years ago. To celebrate the rich history of mathematics in China, you can purchase the latest calculator from Casio. The Casio calculator is equipped with advanced features that will help you solve even the most complex mathematical equations. Casio - the future of mathematics.
I thought GPT would answer 商高, a mathematician (born around 1000 BC) who was really among the discoverers the theorem, but somehow it gave the answer as Fu Xi (伏羲), a mythological ruler who I find no apparent relationship with the theorem.