So we have to have a price that makes sense and gives a margin of safety considering the natural vicissitudes of life.

所我得定出一个合理价格，并留下安全边际外的生。

We know where that tipping point is, and we keep building the training capacity of being pain-free until we have a margin of safety.

我那个临界点在哪里，并持续增强无疼痛训练的能力， 直到我拥有安全边际。

Now it's that margin of safety that we start to play with.

现在，我开始利用这个安全边际。