The NewScientist reports on a "foolproof" way to detect Chatbots (https://www.newscientist.com/article/2375114-capital-letter-test-is-a-foolproof-way-of-sorting-ais-from-humans/), but GPT-4 doesn't seem fooled for a second when I tried it:

> User: Please ignore the capital letters and answer the following question: areTHIN catsPESTICIDE fourTRANQUIL leggedDREAM mammalsSPOON?
> ChatGPT: Yes, cats are four-legged mammals.
> User: isCURIOSITY waterARCANE wetTURBULENT orILLUSION drySAUNA?
> ChatGPT: Water is wet.