I worked at a company that started to go through the "you can't improve what you don't measure" phase. In general it was good for the org I was in, but I used to have to remind management that there's a corollary to that saying, which is: you necessarily improve things you measure at the expense of the things which are difficult or impossible to measure.
This seems to be a hard one for some types to truly grok. A common response is that we need to figure out how to measure it, thinking there was some single magic number that things could be distilled down to. But often even if you figured out how to measure some of them, there's always other intangibles you're not tracking. So you need to always be conscious of it.
"If you spend 10% less on birthday presents for your children, will that make them love you 10% less? How can you justify spending this much on presents?"
there's another issue with measuring too much: if you only derive value of that you can measure, you will constantly feel bad when doing things that have no apparent measurable value.
So then you say to yourself, relaxing on the sofa has value because it makes you perform better to have breaks. But do you really believe this? And in any case, you still can't help measuring value into relaxing because you are brainwashed into thinking everything must be quantified in order to justify something. So even relaxing or playing video games must be seen in such a context in order for you not to feel bad. it's becoming rediculous.
I also like to point out in a few similar contexts: even if you could measure all the things, and you could create a perfect/optimal cost function, there would still be no guarantee that you'd be able to find the optimal global solution. So relax.
This seems to be a hard one for some types to truly grok. A common response is that we need to figure out how to measure it, thinking there was some single magic number that things could be distilled down to. But often even if you figured out how to measure some of them, there's always other intangibles you're not tracking. So you need to always be conscious of it.