The classification came about thanks to Napoleon III, who ordered a group of wine brokers to come up with a list of the best Bordeaux in time for the Paris Exposition, a sort of national trade fair.
Let us assume, for the sake of this discussion, that you may think it only fair that everyone pay something in income taxes even non-payers that may belong to a particularly hard pressed group evoking more sympathy than someone in a different classification of non-payer.
Callahan's favorite group now is consumer discretionary, the standard portmanteau industry classification that includes retailers, automakers and advertising companies.