There’s no objective measure for quantifying similarity. We can measure relative similarity, though—but that scale will vary depending on what it’s relative to.
We could measure genetic similarity relative to a typical unrelated person, or relative to the nearest non-human animal, or relative to the most distantly-related living organism, or relative to random noise. (And you can do the same for facial similarity.)
There’s no objective measure for quantifying similarity. We can measure relative similarity, though—but that scale will vary depending on what it’s relative to.
We could measure genetic similarity relative to a typical unrelated person, or relative to the nearest non-human animal, or relative to the most distantly-related living organism, or relative to random noise. (And you can do the same for facial similarity.)
Yeah I wonder what a 0% match looks like.
Mark Zuckerberg, probably.