The document discusses various aspects of cognition including attention, perception, memory, learning, problem solving, and human information processing. It also covers modes of cognition such as experimental and reflective cognition. Bloom's taxonomy is mentioned as categorizing cognition into knowledge, understanding, applying, analyzing, evaluating, and creating, with the latter three considered higher-order thinking skills. The document also briefly discusses human vision, stereo vision, depth recovery from disparity between two eye images, and optical illusions.