The Thinking Machine –––––––– It was absolutely impossible. Twenty-five chess masters from the world at large, foregathered in Boston for the annual championships, unanimously declared it impossible, and unanimity on any given point is an unusual mental condition for chess masters. Not one would concede for an instant that it was within the range of human achievement. Some grew red in the face as they argued it, others smiled loftily and were silent; still others dismissed the matter in a word as wholly absurd. A casual remark by the distinguished scientist and logician, Professor Augustus S. F. X. Van Dusen, provoked the discussion. He had, in the past, aroused bitter disputes by some chance remark; in fact had been once a sort of controversial centre of the sciences. It had been due t