It does seem a bit weird to lump people like me who remember the Challenger disaster and their first world map without the USSR together with people who have never experienced pre-Columbine school environments.  That&#x27;s not really the article&#x27;s point, though.<p>The point is that which cultural touchstones one remembers doesn&#x27;t even predict the sort of thing that&#x27;s typically attributed to &quot;generations,&quot; at least not until you control for other socioeconomic factors.