一个物理符号系统具备一般智能行为的必要和充分条件。
The world doesn't have to be like this. Things can be different.
No one has ever written or painted, sculpted, modeled, built, or invented except literally to get out of hell.
学习是系统中产生的任何变化,这些变化或多或少会永久性地改变其适应环境的能力。