the weight of their body and they burn up from the inside until their organs shut down but yes there used to be things like dinosaurs and mammoths but yes there are still elephants and giraffes but what about and yes floating can take some of the weight off the bones and muscles so aquatic animals have an easier time being bigger the point is humans can't be that big so then why aren't we waist smaller mmm that one's a little harder but let's see what we can do the big problem here is our thought holes also known as our brains brains brains cells or neurons are some of the smallest cells in the human body at least in diameter and it still takes a brain this big to give us our level of intelligence but elephants have okay okay it's not just about brain size larger animals like elephants do have bigger brains than us in fact they have about three times as many neurons but that doesn't mean the elephant is three times smarter than us naturally bigger animals have bigger brains because there's more stuff to control over NUMBER_PERCENTAGE_TOKEN of those elephant neurons are found in the cerebellum the part of the brain most responsible for motor control it needs all those neurons just to control all it's big clunky parts so what about a brain to body mass ratio something like that has been suggested before we call it an encephalization quotient or EQ which is the ratio between actual brain mass and the brain mass we predict would be necessary to control the body cats have an EQ of one chimps about NUMBER_TOKEN bottlenose dolphins between NUMBER_TOKEN and NUMBER_TOKEN and humans sit comfortably at about NUMBER_TOKEN that certainly puts us on top but we usually attribute higher intelligence to the cerebral cortex which is that wrinkly part on the outside of our brains and only mammals have it which is pretty arrogant if you asked me limiting intelligence to mammals crows are pretty smart and they don't have a cerebral cortex octopuses are really smart and they don't have a cerebral cortex in fact NUMBER_TOKEN/NUMBER_TOKEN of their neurons are in their arms which are not tentacles by the way those neurons allow each arm to act independently of the others and the central brain it's a completely different kind of intelligence ok I concede intelligence is complicated but there is another problem you'd run into if you were smaller your lungs if you get small enough like insects small lows are unnecessary it would be more energy efficient to just absorb oxygen through your skin insects do it through little holes in their exoskeleton Superman ultimate point different sized organisms have to work with a different set of rules our rules only work at our size but here's the real question why do we have any size at all we'll try to find an answer on the next episode of the science asylum make sure you subscribe so you don't miss it thanks for liking and sharing this video and until next time remember it's okay to be a little crazy in the last video we talked about Planck units comment response time rogue assassin gaming was wondering if plot length is the shortest distance then could plug time be the shortest amount of time yes in fact the same models of quantum gravity say that about length and time but again they don't have any experimental evidence so for now plunk time is just the time it takes for light to travel one plot length and as we said in that video it was the age of the universe when it was one plunk length across
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