We can't forecast anything so let's construct some narratives..?
I think the point is more "good forecasting requires keeping an eye on what your models are actually saying about the real world."
That's not what the quote expresses.
The quote basically says that there must be a dumbed-down version of describing whatever you are doing and you must know it -- otherwise you're clueless. And that just ain't true.
Specifically, it's not true in most hard sciences (an in math, too, of course).
Krugman, however, used to do research in economics where there is not much hard stuff and even that spectacularly doesn't work. Accordingly, there is nothing which is really complicated but does produce real results (as in, again, hard sciences). Given this, he thinks...
Another month has passed and here is a new rationality quotes thread. The usual rules are: