In the far far distant future, a few hundred billion years hence, we will certainly have passed our "use by date" as will the Earth and the Sun. Our local group of galaxies will have merged into one big conglomeration of stars that are left and that have further evolved, distant galaxies will have receded beyond our view, the CMBR will be probably undetectable. All that will exist as far as any evolved being around any appropriate star will be concerned, is there own large galaxy, in a continuing evolving, expanding spacetime. So with the current knowledge that we possess of an expanding universe and the evidence for that [the CMBR and galactic recession] virtually nullified, what will such a civilisation presume? Will they descend into further ignorance and chaos as they lack the tell tail signs that have enlightened present day astronomy/cosmology. Is there any possible optimism that can be gained knowing now what is ahead?