... we now have a stick in the ground by which to judge Butcher's estimates ...
We do; but I'm dubious about using this single stick and trying to generalize...
OTOH, this thread actually has several sticks planted:
my "50%" OP is useless, as it was a "been 50% a long time, I think" gripe, so AFAIK there's no document as to when Jim bumped it up to 50%.
HOWEVER:
@Dina reports 54% on 14 June
my own 58% on 23 June
@vincentric posted 60% on 28 June
(etc. I'm not actually going to try to plot the dates vs the %complete; I will look with mild interest upon the efforts of anyone who
does want to do an analysis ...
... )