What would you think of someone who said, "I would like to have a cat, provided it barked"?
That since their preference harms nobody (apart from unadopted cats) and the utility function is not up for grabs, I have no grounds to criticize them?
The preference alone is mostly harmless. When the preference is combined with the misapprehension that the preference can be fulfilled, it may harm the person asserting the preference if it leads them to make a bad choice between a meowing cat, a barking dog, or delaying the purchase of a pet.
If the preference order were (1. Barking Cat, 2. Barking Dog, 3. Meowing Cat, 4. No Pet), then the belief that a cat could be taught to bark could lead to the purchase/adoption of a meowing cat instead of the (preferred) barking dog.
Likewise, in the above preference o...
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