But whatever the method, when you think about how effectively these parasites control the behavior of their hosts, you may wonder how much of human behavior is actually parasites doing the talking.

但是无论何种方法，在你思考这些寄生虫多麽有效地控制宿主行为时，你可能会怀疑不知多少人的行为 都是寄生虫在说话。