Intuitive thinking: It is the way in which the human brain can quickly understand and make judgments on new problems, new things and new phenomena that suddenly appear. Which of the following is not one of intuitive thinking. ['Ancient Greek scholar Archimedes discovered the law of buoyancy while bathing in a bathtub.', 'Focus on a problem, point your mind at this center from different directions and different angles.', 'Humans get inspiration from insect eye composition, and develop many advanced night vision weapons.', 'Darwin realizes "natural selection" theory in reading Malthusian population theory.']