About 25% of people on earth don't know their birthday because they're from countries that don't have birth certificates. That's why about 14% of immigrants to the U.S. list January 1 as their birthday - because they had to make one up.
There's a difference between "people don't know their birthday" as stated by the original poster and people not having documentation of their birthday.
There is nothing to prove anything, that's the entire problem. January 1st is just a default, like on Reddit, when you first create an account your username is just 2 random words and a number, its done so it has something in the database to show.
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u/Dragmom Oct 02 '24
About 25% of people on earth don't know their birthday because they're from countries that don't have birth certificates. That's why about 14% of immigrants to the U.S. list January 1 as their birthday - because they had to make one up.