Schwitzgebel suspects the greatest impact came from social influence — classmates or teaching assistants leading the discussions may have shared their own vegetarianism, showing it as achievable or more common.
Schwitzgebel 怀疑最大的影响来自社会影响——领导讨论的同学或助教可能分享了他们自己的素食主义,表明素食主义是可以实现的或更普遍的。