Robert Graham Merkel wrote:
I strongly disagree with the idea of splitting Wikipedia up at this stage. Make sure we provide comprehensible introductions to articles, readable overviews, and concentrate on clear writing, and most of Wikipedia will be comprehensible to most people who try to read it (perhaps with some help for younger children, but they're going to need help with any other reference).
In many cases that should read "perhaps with some help *from* younger children".
Ec