TWO PEOPLE IN MY CITY HAVE THE EXACT SAME NUMBER OF HAIRS. WHAT? ASSUMING A PERSON HAS ABOUT 600000 HAIRS ON THE HEAD AND A BIG CITY HAS MORE THAN THAT AS CITIZENS. THEN THE MAP ASSIGNING A PERSON TO A NUMBER OF HAIRS CANNOT BE INJECTIVE. IT FOLLOWS TWO PEOPLE HAVE THE SAME NUMBER. HAVE YOU READ ANALYSIS AGAIN?