But if mothers encourage babies to feed, we could reach the conlcusion that the encouragement, rather than cannabinoids, stimulates the feeding. This conclusion weakens the argument, doesn't it?
还是对c比较纠结,大家选e的原因是因为抑制appetite是由注射了chemical导致没有cannabinoids,那就需要去掉是由于chemical本身刺激appetite的原因,得到的就是cannabinoids刺激了食欲,但是这个情况下如果C. The mothers of newborn mice do not normally make any effort to encourage their babies to feed.这个条件不一样,那也会导致less appetite的。没有办法证明除了chemical本身就只有cannabinoids刺激食欲了啊。将c去非,如果mother采取了any effort to feed baby的话,new mice也不见得会less appetite的。