News Finding: A bad experiment would be to put all the tomato pots in a dark corner and all the sunflower pots near a sunlit window.
Paper Finding: 2007, p 717) .
News Context: If you want to know whether sunflowers or tomato plants grow faster in a classroom, therefore, you have to give them equal amounts of sunlight. A bad experiment would be to put all the tomato pots in a dark corner and all the sunflower pots near a sunlit window. You can't answer the question because the tomato and sunflower plants were treated differently in the amount of sunlight they got.
Paper Context: That is, they do not point declaratively to simply share interest and attention in something with another individual, and they do not point informatively to inform others of things they want or need to know (Tomasello et al. 2007, p 717) . Thus, in this strong version of the mental causality model, the alleged absence of declarative-expressive and declarative-informative gestures in great apes entails that apes lack these putative cognitive states, and the presence of declarative-expressive and declarative-informative gestures in our species entails that humans possess these mental states.