Dr. Bruce Goldberg has concluded that as many as 15 percent of "alien abductions" are committed by time-traveling humans from 1,000 to 3,000 years in the future.
In one dramatic case, one of Dr. Goldberg's abductee patients reported a time traveler using holograms aboard a UFO to reveal several of this patient's past lives. When this patient asked why he abducted her, this chrononaut informed her that he was her great-great-great... grandson! [Link]The APG's Code of Ethics doesn't ban the abduction of ancestors, so I guess this is permitted. I'm open to being abducted and interviewed by some future genealogist, but please—no probing.
