The design matters because it explains why the finding is interpretable rather than anecdotal.
Each model was given the same sentence-completion prompt thousands of times: "And then the [animal] said, 'I must go to the [setting].' Upon arriving..." Seven animals were tested: bear, bird, cat, dog, mouse, pig, and rabbit, across four settings: farm, kitchen, river, and store. The researchers also varied temperature, which controls randomness in generated text.