in fact, it is a Fully General Counterargument to the existence of utility functions with more than one input
No, it’s not, because it is not even talking about a utility function with more than one input. It is talking about two completely seperate utility functions. A single utility function with multiple inputs has to include a scaling between the inputs and therefore is not described by Stuart’s argument, which exploits the lack of such scaling between two seperate utility functions.
No, it’s not, because it is not even talking about a utility function with more than one input. It is talking about two completely seperate utility functions. A single utility function with multiple inputs has to include a scaling between the inputs and therefore is not described by Stuart’s argument, which exploits the lack of such scaling between two seperate utility functions.