Given enough time Boltzmann freak structures will appear, assembled from drifting matter, in the maximum-entropy universe if it is static, I.E. not expanding to eventually sweep all matter into the far horizon. In a lecture http://www.cornell.edu/video/leonar...ervation-of-information-holographic-principle (about half way in) Leonard Susskind seems to say that given accelerated expansion of the universe (dark energy), after all matter has disappeared into the horizon Boltzmann freak structures will still appear, assembled from drifting matter, in the maximum-entropy, nearly always empty, universe. This will happen because, from our viewpoint, nothing actually crosses a horizon - special relativity explains why things approach horizons asymptotically. Particles, frozen and piled up on the horizon, can get a spontaneous kick of kinetic energy which propels them back into the visible universe, where they will drift around until the expansion of space again displaces them to the horizon (and they will be back). Is this possible, indeed inevitable? Can it be true that nothing ever leaves the visible universe, that everything - all particles, patterns, and structures - come back eternally, even though the expansion of space accelerates?