"The real point of the matter is that what we call a ‘wrong datum’ is one which is inconsistent with all other known data. It is our only criterion of right and wrong. It is the Machine’s as well. Order it, for instance, to direct agricultural activity on the basis of an average July temperature in Iowa of 57 degrees Fahrenheit. It won’t accept that. It will not give an answer. —Not that it has any prejudice against that particular temperature, or that an answer is impossible; but because, in the light of all the other data fed it over a period of years, it knows that the probability of an average July temperature of 57 is virtually nil. It rejects that datum.