::He refers to his sandbox version [] - this is what he was asked to do. The existing version has many faults, and I suspect a large part of it is Encyclopedia Britannica 1911 or some such source, as ye olde vocabulary suggests. There is far too much caliph-by-caliph narrative, a fault the sandbox version repeats. That is much shorter, but over-simplified, unsophisticated, and not very well-written. We badly need a rewrite based on the best modern sources - the initial "Early sources" section gives a misleading impression of the article, the rest of which is not to this standard, with many references to questionable websites. Until this happens we should stick with the devil we know.