  The influence of recent detections of a finite vacuum energy ("cosmological
constant") on our formulation of anthropic conjectures, particularly the
so-called Final Anthropic Principle is investigated. It is shown that non-zero
vacuum energy implies the onset of a quasi-exponential expansion of our
causally connected domain ("the universe") at some point in the future, a stage
similar to the inflationary expansion at the very beginning of time. The
transition to this future inflationary phase of cosmological expansion will
preclude indefinite survival of intelligent species in our domain, because of
the rapid shrinking of particle horizons and subsequent depletion of energy
necessary for information processes within the horizon of any observer.
Therefore, to satisfy the Final Anthropic Hypothesis (reformulated to apply to
the entire ensemble of universes), it is necessary to show that (i) chaotic
inflation of Linde (or some similar model) provides a satisfactory description
of reality, (ii) migration between causally connected domains within the
multiverse is physically permitted, and (iii) the time interval left to the
onset of the future inflationary phase is sufficient for development of the
technology necessary for such inter-domain travel. These stringent requirements
diminish the probability of the Final Anthropic Hypothesis being true.
