This post is a companion to A Cure for What Ails Big Retail + Getting Experiential Retail Right.  If you love a good experiment, as I do, the last few months in retail should have made you pretty happy. Having now cycled through the classic grief-response phases of Denial (it can’t happen to me); Anger (can’t we put Amazon out of business); Bargaining (continuous discounting + perhaps a new look); and Depression (dithering, procrastination and turning to the usual drugs, like financial engineering); a growing chunk of the retail world has finally reached some sort of Acceptance. But acceptance of what? That one should chuck it all in and sell on Amazon? No. Acceptance of an existential question: what, exactly, is the purpose of a store in…