Birthday is much more specific that a lot of other indicators. I feel like in a list of “15 attributes” throwing in birth day among other is like saying we could pick you out of a crowd based if we had “hair color, foot shape and a picture of your fucking face.” There are very few datasets that should be disseminated with birth date. For research and marketing a 1-to-2 year birth range should be plenty to put you in a statistical bucket.
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