Besides being deeply anthropocentric (why should humans be the only thinking organisms in the universe?), the identity-type theory also failed to deal with accumulating evidence in the neurosciences that every single human brain is different from all the others.
除了强烈地以人类为中心（为什么人类就该是宇宙中唯一思维的有机体呢？），类型同一理论还无法处理神经科学中积累起来的证据，即每一单个的人脑与其他所有的都不同。