Pocestors are for our future what ancestors are for our past. It stems from Mike Soussan's theory that modern humans are a sort of holographic interference pattern of an object beam made by the past (ancestors) and a reference beam made of the future (pocestors).
Extraterrestrials may be our pocestors and those who say they have seen aliens may not be simply crazy. For in the same manner that some shamans receive intimations of our ancestral past, so can other people with the same kind of sensitivity capture similar vibrations from our pocestors and pocestral future. The future, as some may have been conditioned to believe, is not an empty vacuum but is teeming with life, a life that has a lot to do with us.