One can generally convert all things to dollars. There&#x27;s generally a price you can offer to convince someone to do most things, such as your example of spending time away from family.<p>Sure, money can&#x27;t buy happiness, humans are weird about non-transitive preferences (if a is preferred to b and b is preferred to c, it turns out that sometimes c is preferred to a), and some things like ethics end up at infinite dollar value... but whatever, this is just a model. You can make it as complex&#x2F;realistic as you think is necessary.