The function of entrepreneurs is to reform or revolutionize the pattern of production by exploiting an invention or, more generally, an untried technological possibility for producing a new commodity or producing an old one in a new way.

变化的速度如此之快，以至于我们必须跑得更快才能保持在原地。

假设体系的功能在于预先警示我们将有何种体验——使我们能够做出准确预测。