[pennomi]

My pet question is “Which weighs more, 1000cm^3 of styrofoam or 1cm^3 of tungsten?”

Most LLMs go through the calculation and find the styrofoam is heavier, then confidently announces that the tungsten weighs more. Strange considering it’ll say something very nearly like “The styrofoam weighs 50 g and the tungsten weighs 19.3 g, therefore the tungsten is heavier.”