AND WE SAY PLEASE TYPE BOTH IF YOU TYPE THE CORRECT WORD FOR THE ONE WHICH THE SYSTEM ALREADY KNOWS IT ASSUMES YOU ARE A HUMAN AND IT ALSO GETS SOME CONFIDENCE THAT YOU TYPED THE OTHER WORD CORRECTLY AND IF WE REPEAT THIS PROCESS TO TEN DIFFERENT PEOPLE AND ALL OF THEM AGREE ON WHAT THE NEW WORD IS THEN WE HAVE ONE MORE WORD DIGITIZED