I'm not trying to be elitist or superior, but I can't understand why this has spent such a long time on the front page. Shouldn't the content of the article be

I'm not trying to be elitist or superior, but I can't understand why this has spent such a long time on the front page. Shouldn't the content of the article be considered pretty basic knowledge at this stage of OO? Deferring implementation specifics using polymorphism was one of the first things I learned about OO when I was introduced to it (via C++) around 1992. It was definitely 'aha' worthy then, when the vast majority of commercial development was procedural, but these days? Shouldn't it be considered a basic tool in most devs' repertoire?