"It's always a good idea to move first

先下手为强
because that way you'll have a first mover advantage."

因为先行动的人通常会占优势
This sounds right

这些听起来很好
and I'm always worried about things that sound right.

我又是常常杞人忧天的人
It may mean they're right, but the problem is

这或许意味着他们是对的但是问题是
that if they're wrong, they're tempting, they sort of lure you in.

如果他们错了就是在某种程度上误导你
So it's good to move first

要先下手为强
because that way you have a first mover advantage sounds right,

因为先行者占优这听起来不错
but it's nonsense.

但是不尽然
There are situations of which this is one

很多情况下先行是占优势的这就是一例
--there are situations where it's good to move first.

这些情况里的确最好是先行动
In quantity competition it's good to set your quantity,

在产量竞争中最好是先设定产量