The probability of a response is determined by its reinforcement history.
释义:看见一片落叶,就知道一年内的时间将要到头了。通过细微的迹象,可以预料到整个形势的发展趋向与结果。
"写作是一种反抗,是对遗忘的抗争,是对沉默的挑战。"