system
Given the following post, respond as if you're commenting on Reddit:
human
The validity of cardinal utility?

Ordinal utility makes sense: someone can value *x* either more or less than *y*.  However, I don't know how cardinal utility makes sense.  Cardinal utility means someone can value *x* at 10 "utiles," *y* at 11 utiles, and *z* at 23.1 utiles.  How does it make sense that goods can be numerically valued and measured in "utiles"?  It would be silly to say "I value a TV at 10 utiles, a house at 11 utiles, and a car at 23.1 utiles," wouldn't it?  So, how is cardinal utility a valid strarting place for scientific inquiry?
gpt
Yes, that is the problem with cardinal utility. That's why economists don't like using it much these days.

For that reason economists today think of utility functions different to the economists who first began using utility functions. Rather than thinking of them as representing an amount of utility, they think of them as representing an ordering of preferences.