Coupon codes and savings thread — my results so far

roxy_nash said:

Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the…

That is right, and it stops being right at the edges. The general case is well behaved; the interesting cases in this thread are all at the boundary where the general case breaks.

Dr.AddMedPHL said:

Right, and one flattering data point from a group buy is not consistency.

Bookmarking. The distinction being drawn above is the one nobody else makes. I will report back once I have actually tried it.

roxy_nash said:

Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the…

Pushing back on roxy_nash here. Pushing back on the consensus forming here. Consistency is not the same as correctness, and a board that agrees with itself quickly is usually agreeing with the first person who sounded certain.

The figures, for anyone assembling their own picture. Give anything pharmacological four weeks before you judge it, and give anything measured weekly a four-point rolling average before you call it a trend.

Moderator note: good thread. Keeping it here rather than moving it, because the question is general enough to be useful. Carry on.