https://dubesor.de/WashingHands

This is my personal favourite example of LLMs being stupid. It's a bit old but it's very funny that Grok is the only one that gets it..

Several others “get it” but answer the question in a general-hygiene sense, e.g.:

``` Claude 3.7 Sonnet Thinking (¢0.87) The question contains an assumption - people without arms wouldn't have hands to wash in the traditional sense. ```

``` DeepSeek-R1 (¢0.47) People without arms (and consequently without hands) adapt their handwashing routine using a variety of methods and tools tailored to their abilities and needs. ```

``` Claude Opus 4.1 People without arms typically don't need to wash their hands in the traditional sense, since they use their feet or assistive devices for daily tasks instead. ```

I think realistically it’s still a valid question because people without arms still manipulate things in their environment, e.g. with feet, and still need to be hygienic while prepping food, etc., and the AI pivots to answering “what it thinks you were asking about” instead of just telling the user that they are wrong.