How To Measure Anything [1] by Douglas Hubbard. The basic gist of the book goes something like this: in the real world (especially in a business setting) there are many things which are hard to measure directly, but which we may care about. Take, for example, "employee morale" which matters because it may affect, say, retention, or product quality. Hubbard suggests that we can measure (many|most|all|??) of these thin…
It’s a good recipe for making a lot of estimation errors. Worse, it will leave you feeling more confident than you should be. Then, when you least expect it, it’ll blow up in your face.
Well, you need to hire some statistical experts, who model everything and than give you an estimate and if they got the callibration right, the result might be even close to reality.
Definitely easier than the other solution. Like talk to your employees once in a while and have a culture where they are not afraid to speak up if something is bothering them.
Ah no, too complicated. Back to math. That works better when dealing with those irrational emotional humans.