how do apps like the original 20 questions game work?

Question

i downloaded an app that’s similar to the handheld 20 questions game i had as a kid.

i’m thinking of the most obscure characters and it still guesses it every time. someone please explain to me how this works

In: Technology

Answer 1

A person thinks of any Thing. Any noun. No proper nouns. Othe other person or people get to ask a total of 20 yes or no questions.

Is it a mineral? no

Is it an animal? yes

Is it cold blooded? no

Is it a mammal? yes

Is it normally more than 50 lbs? no

Is it normally more than 5 lbs? yes

Is it a common pet? yes

Is it a dog? no

Is it a cat? Yes You win.