[Zope] Python object lifecycle? (was Re: [Zope] Where to put business logic? logic?

Not to start a "what IS client server?" discussion (I thought we got past that in the last millenium), but it looks to me like Zope IS the middle layer. In terms of layers, the browser "front end" handles presentation (client), the "back-end" (data server, host) is an RDB, or CD tower (of image files), or whatever, then the integration layer "middle" is Zope. It really doesn't change whether you call it "middleware", "application server", "content manager", etc. In other words, Zope is where you get to build in the business logic, as objects, and find relief from the narrow bounds of SQL. Of course, the Zope layer can be fairly complex and is subject to being defined as having multiple layers within itself, but that's another thread.