That&#x27;s somewhat covered in the &quot;Expected utility theory&quot; section of the Wikipedia article. In short, if you double your money it doesn&#x27;t double the usefulness you get out of it, so you have to take that into account.<p>However, that analysis assumes that additional money always adds <i>some</i> additional usefulness, and then you can make the problem reappear. To get rid of it entirely you have to declare that there is some point beyond which provides zero additional value no matter how much more money you add. And as you say, such a point surely exists.