It's so you won't have multiple 'ooh' moments a year in coding - "I need to change that base thing, will require large rewrite". Or at least decrease possibilit

It's so you won't have multiple 'ooh' moments a year in coding - "I need to change that base thing, will require large rewrite". Or at least decrease possibility of it. Six months seems a bit too long even for 266 pages specs though.