If one should always adopt so-called "positive thinking" to stimulate production of beta-en-dorphin, then all that is really needed is for someone to invent an endorphin injection. Then we could have a dictator just like the one in Aldous Huxley's book Brave New World, who easily tames a society of people who assume themselves to be happy and fortunate.
若是一味地為了刺激腦部產生 β 內啡呔的快感荷爾蒙，而刻意採取所謂「正面思考」，則只要有人發明 β 內啡呔的注射劑，那豈不就可以像英國作家赫胥黎在《美麗新世界》一書中所描述的獨裁者一樣，輕易控制一批自以為快樂幸福的順民？