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How about an internet site where people could submit an electronic photo of themselves. (Perhaps two photos; one frontal facial, and one side facial.)
A computer would then analyze the photos and create groups of photos in which the members of the group look very much alike.
You could then log into the site and find someone who looks just like you. Who knows? You might discover that you are a twin and have never been told!
Then once a year, a look-alike get-together would be held, and people from all over the world would come to meet with their look-alike(s). Humans would then discover the powers of fractality. Yes, there is power in numbers. The body must come together.
Geneticists could be present at the get-together to make studies. For example: two people look amazingly alike. does this mean they are geneticly close matches?