--- In [email protected], Hitoshi Ozawa <htshoz...@...> wrote: > > Hi again, > > To clarify the point, there's actually 3 factors. > First, there's a description of the real business value the service > provides. This is analogous to the description of an item at a store. The > real value of the pen does is not related to how I purchase. > > Second, there's a description of businesss transaction options. The kinds of > protocol I can use, the data format, encoding, etc. When I'm buying a pen, I > would like to such things like know my payment options and shipment options > the store is offering. > > Thirds, there's the actual contract based on the choices made. I'm using my > VISA to pay for the pen and I want it shipped to my home address via Federal > Express overnight delivery. > > Since it's a holiday season, try going to some online store and see how you > buy things. > > H.Ozawa >
I don't think that is an ideal explanation, though I get what you are driving at. at the 2nd and 3rd level, it should not be the detail of how you buy the pen, but of the detailed behavior offered by the pen and how you use it. Buying is capability offered by some buying service, that has its own behavior - and can be used for buying anything.
