Radiocarbon dating according to uniformitarian presuppositions is discredited from a number of points. These points are, (1) numerical sensitivity of the computed age on the decay measurement, (2) improper constitutive equations, (3) prejudicial calibration of the relation of historical and radiocarbon ages, (4) and the failure to set the initial conditions in the light of the present specific productivity and specific activity. For uniformitarian radiocarbon ages, a', say less than 30,000 yr, a straight line relation between a' and the historic age a is derived heuristically by considering the decay of the magnetic field of the earth. This solution seems to fit the data and shows that large a' are grossly overestimated, possibly by a factor of five. A creationist comprehensive model for radiocarbon is discussed.