It's not an inability, it's a policy choice, which is why it's weird. The question is why does Google think this rule is a good idea. Imagen could surely draw v

It's not an inability, it's a policy choice, which is why it's weird. The question is why does Google think this rule is a good idea. Imagen could surely draw very good humans if allowed to. Robot looking at a cat wearing a top hat appears to be easier than with a human for DALL-E too, judging from the comments on Alexander's article, because both objects are neutral with respect to top hats. But really the whole set of prompts is poorly chosen. The original challenge of arbitrary shapes in relative positions seems the best way to test understanding of grammar and object relationships, exactly to avoid the "humans wear top hats and cats never do" problem. A better set of prompts is important - in this Gary Marcus is correct - exactly because there's no point defining a specific prompt if later you'll decide you accept a totally different prompt. That kind of invalidates the point of betting on well specified challenges to begin with.