Sidetracked

Thanks to everyone for your heartening and useful comments.  Yes, once again, I have demonstrated how easily I get sidetracked by 'intellectual' problems when they never really matter much in the construction of a book.  They do function rather nicely as avoidance items though.  Of course you don't need to know what you're doing when you sit down, in fact I think it is positively bad if you do, as this will stand in the way of interesting progress.  For myself though I definitely need an emotion