"In the study of computational complexity, we often find that the boundaries of what is possible are defined by the limits of our imagination."

出自《魏源集·默觚下·治篇五》。三代以上，天都跟现在的天不一样，地都跟现在的地不一样，人也跟现在的人不一样，物也和现在的物不一样。

实验是发现新可能性的关键。