His preferences in that scenario do not violate independence of irrelevant alternatives (that might be your point; I’m not sure). This is meant as an intuition pump to show the absurdity of violating IIA, not a watertight argument that the observed behaviour does in fact violate it.
His preferences in that scenario do not violate independence of irrelevant alternatives (that might be your point; I’m not sure). This is meant as an intuition pump to show the absurdity of violating IIA, not a watertight argument that the observed behaviour does in fact violate it.