guesstimation

In his book “The Cold Vanish” he acknowledges that it’s a “rounded guesstimation” although he believes 1,600 is “wildly conservative.”

To learn how to make estimates like these, check out the book Guesstimation by Lawrence Weinstein and John A. Adam.

This will be part speculative mathematical guesstimation and part box office history lesson.

You can see how quickly a good economic theory slides into guesstimation and value judgments.

So there's a bit of guesstimation going on here.