== Another Go... == 

 I've had another go at the intro - and i'd like to make a small point here - it doesn't seem to work very well when we take a starting point, and then add extra clauses, definitions and elaborations - readability and clarity suffer enormously. 

 I think the para i just replaced was quite clearly unwieldy - and hope that what i've gone for says pretty much the same thing without being needlessly verbose.. whaddya reckon?