Mind and nature: a necessary unity

abstract action adaptive aggregate animal become behavior bilateral symmetry binocular vision biological bithorax calibration called Chapter characteristics circuit coding combined complex components consciousness context contrast crab creatures criteria criterion daughter differentiation embryology energy environment epigenesis epistemology evolution evolutionary example experience explanation fact father formal resemblance gametes genes genetic change Gregory Bateson hierarchy homology human ideas individual interaction internal Lamarck Lamarckian language learning logical typing look matter mental process messages midwife toad mind natural selection negentropy nuptial pads odd numbers pathways pattern which connects perception perhaps phenomena phenotype pieces precisely predict presuppositions problem propositions quantity question random relations relationship relevance Samuel Butler schismogenesis sense organ sequence sexual reproduction side simple somatic change sort species step stochastic processes stochastic system surely switch symmetry tautology temperature theory thought tion variable whole words