&gt; I think there is a heavy urban prejudice to the generational categories definitions<p>There&#x27;s a heavy urban prejudice to the <i>population</i> (US population is 81% urban), too, so its not surprising that broad descriptions of population might be biased that way.<p>&gt; and a lot of it seems to be directed at what sales categories to use.<p>Given that substantial real money is on the line in often highly competitive environments, &quot;sales categories&quot; most likely capture real features.