At this point in the thought experiment, I would like to lay out some definitions.

在思维实验这个阶段，我将些定义。

As the authors note, the third stage involves individuals redefining their role in the community.

作者指，人生的第三阶段涉及个人重新定义自己在社会中的角色。

We can see how whether it's the same person or not has to turn on the relations between the stages.

我们发现要定义两个人究竟是是同人要参考两人所处的阶段之间的关系。

And each stage, from infancy to old age, is defined by its own predominant issue or crisis.

从婴儿期到老年的每个阶段都由其自身的主要问题或危机来定义。

But A.I. is still in its infancy and while computers can now make more decisions than ever before, it's the people who define the impacts they have.

但是，人工然处于初级阶段，虽然计算机现在可以做比以往任何时候都多的决定，但是它的影响是由人来定义的。

A dream can be defined as a series of thoughts, images, ideas, emotions and sensations that occur in your mind during various phases of sleep.

梦可以定义为在睡眠的同阶段现在您脑海中的系想法、图像、想法、情绪和感觉。

To sum up briefly, today we've discussed the definition of learning, the two stages involved in the process of learning and the four types of learning.

总而言之，今天我们讨论了学习的定义，学习过程中的两个阶段和四种类型的学习。