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yayu
yayu
00:39
I have a silly question, so I am posting it here in case someone finds it worthy to clear my doubts
I need 33 bits of information to uniquely identify a person on earth
in a way, i can design a yes no questiionaire with 33 questions and each person will give a unique answer
i want to know if the figure of 33 is an absolute lower bound. I mean, I can surely ask a question like "is your n'th bit 0?"
but with prior information, i can design an adaptive questionnaire
for example..
Is your race Caucasion?
If not, I'll ask if it is Mandarin, Hispanic, etc.. until I get a yes
If for example, race is hispanic, choose most populated hispanic country, ask a series of questions about nationality, choosing next most populated country . When nationality is confirmed by a yes answer, ask if person resides in region X, where X is most populated region in said country ... and so on
so I can single out someone in much less than 33 bits of input for most people of the world. or is this idea nonsensical and it is not possible to design a survey with less than 33 questions.

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