Truth-Value Light — — — — — possible statuses of employees who are not insured are shown in Table 17. As we look down the last column in Table 17, we observe 6 occurrences of _T_, instead of 5 as the manager determined (see Table 15). Thus, when we compare the manager’s result with the machine result, we find an additional possible combination to be reported to Mr. Adams, combination 7: Employee eligible, employee has not applied, employee’s application not approved, employee requires a medical examination, employee not insured. Table 17 SOLUTION OF THE PROBLEM BY THE CALCULATOR LEGEND: {A} THE EMPLOYEE IS ELIGIBLE FOR INSURANCE {B} THE EMPLOYEE HAS APPLIED FOR INSURANCE {C} THE EMPLOYEE’S APPLICATION FOR INSURANCE HAS BEEN APPROVED {D} THE EMPLOYEE REQUIRES A MEDICAL EXAMINATION {E} THE EMPLOYEE IS INSURED {F} CASE, OR COMBINATION NO. {G} THE COMBINATION DOES NOT CONTRADICT THE RULES, I.E., THE YELLOW LIGHT IS ON {A} {B} {C} {D} {E} {F} {G} _Status_: 1 2 3 4 5 _T_ _T_ _T_ _T_ _F_ 1 _T_ _F_ _T_ _T_ _T_ _F_ 2 _F_ _T_ _F_ _T_ _T_ _F_ 3 _F_ _F_ _F_ _T_ _T_ _F_ 4 _F_ _T_ _T_ _F_ _T_ _F_ 5 _T_ _F_ _T_ _F_ _T_ _F_ 6 _F_ _T_ _F_ _F_ _T_ _F_ 7 _T_ _F_ _F_ _F_ _T_ _F_ 8 _F_ _T_ _T_ _T_ _F_ _F_ 9 _T_ _F_ _T_ _T_ _F_ _F_ 10 _F_ _T_ _F_ _T_ _F_ _F_ 11 _F_ _F_ _F_ _T_ _F_ _F_ 12 _F_ _T_ _T_ _F_ _F_ _F_ 13 _F_ _F_ _T_ _F_ _F_ _F_ 14 _F_ _T_ _F_ _F_ _F_ _F_ 15 _T_ _F_ _F_ _F_ _F_ _F_ 16 _T_ Because of the medical examination, this additional class of employee would need to be considered rather carefully in any change of the group insurance plan. AN APPRAISAL OF THE CALCULATOR In appraising the Kalin-Burkhart Logical-Truth Calculator, we must remember that this is a first model. It was the only machine of its kind up to the end of 1948; and it worked. The cost of the machine, as stated before, was about $150 of parts and perhaps $1000 of labor. This is less than ¹/₁₀₀ of the cost of the other giant brains described in previous chapters. Yet we can properly call this machine a mechanical brain because it transfers information automatically from one part to another of the machine, has automatic control over the sequence of operations, and does certain kinds of reasoning.