[…] Complexity and Order are two independant features of an observed system. Order, which is Negative Entropy, may increase without increase in complexity: and complexity might increase without change of entropy.
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PRINGLE, J.W.S., 1951. On the Parallel Between Learning and Evolution. Behaviour. 1951. Vol. 3, no. 1, p. 174–214. DOI 10.1163/156853951X00269, p. 176.