Not cooperate, to say defect.

不合作也就是背叛
So what's going to happen now?

那么接下来会发生什么呢
So unfortunately for Nick he, the cooperative ant,

对于尼克这只合作型蚂蚁来说很不幸
was matched against a not very nice ant,

他和一只不太友善的蚂蚁进行了配对
he was playing C and Rahul was playing D,

他选C但是拉胡尔选了D
so Nick's payoff is 0, so we went from one Nick to being no Nick,

尼克的收益为0 也就是说他被劣汰了
he got wiped out.

他出局了
Rahul meanwhile, he got a payoff of what?

此时拉胡尔的收益是多少呢
What was Rahul's payoff? Rahul's payoff is 3,

拉胡尔的收益是3
so suddenly there's not just Rahul but there's,

所以突然间就不仅仅只有一个拉胡尔了
the mutation is growing.

突变个体的数量变多了
Now, we go on matching,

好了我们继续配对吧