Giant world hypothesis
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Giant world hypothesis, proposed by Jithu U. Krishnan in 2020. His hypothesis states that pre-historic large organisms are the resultants of nature's experiment to achieve more energy efficient systems. i.e.; by considering Max Kleiber's law from 1930, a large organism is more efficient in the management of energy when compared to the small organisms in volume. Even in poikilotherms (ectothermic animals), large body size enables them to stabilize the body temperature as described in the Physiology of dinosaurs. During the period of Devonian to Triassic in fishes, Permian to Cretaceous in reptiles and late Cretaceous to Paleogene in mammals, giant beings were dominating all the terrains. The trend of evolution towards the increase in body size might have observed a limit in resource and bounced back to individual optimum when more specialisation features were characterised to a species on the course of further evolutionary diversification. This is an irreversible change until a mass extinction or a mass eco-catastrophe happens.
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