The closure explanation would make more sense if paging through lists of links/articles wasn't one of the oldest solved problems of web site UI. Closure may be

The closure explanation would make more sense if paging through lists of links/articles wasn't one of the oldest solved problems of web site UI. Closure may be a quick & elegant rapid prototyping technique but probably not as quick and useful and doing what thousands of other web sites already do in a few lines of code.