The danger is that if you don't really understand what these mathmatical formulae mean then you might come up with a poor plan.
So what are you suggesting as an alternative that would make one less likely to come up with a poor plan?
good point, John. I suppose one could develop a plan from watching Rambo movies, or reading Sin City comics, or any of a number of other fictional sources. You don't always need to know what the formula means in order to understand the results. You really don't need to understand levels of confidence, multivariate and bivariate analysis, and so on to understand that you don't need to worry much about being attacked by a tiger in your living room when you find out the odds. The real dange, IMO, is developing plans based on incorrect perceptions, bad data, and so on. THAT is where the poor plan is more likely to come from, IMO.