Explain and then rewrite the following awkward sentences:
(1) God's goodness is never a consideration with Satan and his rebels, as they are blind to what in others they themselves lack.
(2) One person in five shows no alpha rhythm at all-only small, complex irregular pulsations from all parts of the brain. In one in five also the alpha rhythms go on even when the eyes are open.
(3) We have established a tentative classification of brain types in human beings on the basis of such personal differences. This system indicates differences in ways of thinking, rather than the relative success of people's thinking, as "intelligence tests" do.