"To emphasis how bad that sort-based "shuffle" is, consider that over a million shuffles of four values, 1/3rd of the possibilities are never chosen. And the rest are chosen so disproportionately that 'fairness' doesn't enter the equation:"

I must try to remember that some people have difficulty recognizing meiosis (not that I'm including BrowserUk in that list). My original post included the words: "some of them more efficient by various metrics".

Oh well.

Paul