how was it proved that every person has unique fingerprints?
In: 17
It never really was. It started off being used by the FBI to help solve cases scientifically back in the 20th century. Over time it became an acceptable standard of uniqueness. But at the time it would have been impossible to prove they are really unique since computers werent invented yet.
Not sure anyone has actually proven uniqueness in the age of computers. Maybe they have.
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