But the second take away lesson is more general,

第二点可能用途更广泛
so let me just pause to get everyone to wake up again so I make it.

大家注意我接下来要说的内容
The second take away lesson is this.

我们从中要学到的第二点是
What tips the balance here from the Economics answer

经济学答案和会计学答案的区别
and the accounting answer, were the strategic effects.

在于前者考虑到了战略效应
It was the strategic effect. This is a strategic effect.

这个就是战略效应
It was the effect of the other firm or other players

它是其他公司或其他参与人
changing their behavior.

改变其行为时的影响
And the most common mistake to make

当你要做出战略决策时
when you're thinking about strategic decisions is what?

最容易犯的错误是什么呢
It's to forget that they're strategic.

就是忘了他们是战略性的
It's to forget that the other players are going to change their behavior.

你忘了其他参与人也会改变行为