Following are some descriptions of Inflationary Model(s) of the Universe which are quite different than I have read elsewhere. My own view, I now believe, was likely a bit myopic. These comments reflect Paul Steinhardt and Neil Turoks' descriptions in their book ENDLESS UNIVERSE where they propose a cyclic model they call the ekpyrotic model. This is a cyclic, repeating, model that competes with inflationary, one time bang, models. I'd be interested in comments from others regarding the general validity of these views of inflationary models. (These are all from Chapter 10 of their book.) and they imply the inflationary model has not addressed the cosmological constant problem: Please note I'm not advocating one model over another, only sharing ideas and trying to gain a better perspective.