Martin Davis suggests that in order to prove whether or not the algorithm existed or not, Alan Turing analyzed and simplified how a human goes through the problem when using a pencil and paper. (Davis 1) Turing’s thought process while inventing made him unlike other mathematicians because he was the only one to consider basing his code on the human thought process. Jim Holt acknowledges that in the machine “over this tape a little scanner travels back and forth, one square at a time writing and erasing 0’s and 1’s. The scanners action at any moment depends on the symbol in the square it’s over and the state it is in--its “state of mind,” so to speak.” (Holt 3) This feature made Turing’s universal machine unique when compared to other machines because it functions like the thought process of a human brain. Jim Holt also acknowledges that “there are only a finite number of states, and the way they link up what the scanner sees what it does constitutes the machines program. (A typical line in a program would be something like “When a machine is in a state A scanning 0, it will replace 0 by 1, move one square to the left, and then go into state B.”)” (Holt 3) Turing’s machine having multiple “states of mind” allowed this machine to calculate and complete more tasks than any other machine before. Jim holt observes that it became possible to combine the tape from several machines into one. When …show more content…
According to Jim Holt, “the Enigma, invented for commercial use in 1918 and soon adopted by the German military, had an alphabetic keyboard and, next to that, a set of twenty-six little lamps, one for each letter.” (Holt 4) Turing’s reputation starts to grow because the functionality of his machine is being used for the military and helping end one of the largest wars known to the world. Martin Davis states that “it was Turing’s logic machines (called bombes) that made it possible to decipher German naval communications and thus to defeat the submarine fleet that was choking Britain's Atlantic lifeline.” (Davis 2) Turing’s machine is what made it possible to have a fighting chance to end World War Two. Jim Holt suggests that on the military “plugboard” the connection between the letters could be scrambled even further. By changing the the settings of the wheel by midnight everyday and adding more complexity to the layers, this increased the possible number of outcomes for letters to about 150 quintillion. (Holt 5) Increasing the accuracy of the machine . Jim Holt demonstrates that “if you typed the letters “d-o-g,” the letters “r-l-u” might light up on the lampboard. When “rlu” was sent out in Morse code by a radio operator, a recipient would pick it up, type it on the keyboard of his Enigma machine, and the letters “d-o-g” would light up on the lampboard--so long as the settings of the two machines