Comments by "zenith parsec" (@zenithparsec) on "Doors vs Wheels Meme SOLVED" video.

  1. 10:25 if by "this answers the question definitively" you mean "we have defined the question to be about exactly what we wanted to answer" then, yes. you have definitively answered it.
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  2. Also "they snipe me" when talking about going to a school? Oooo. ;/
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  3. 11:00 And now you're limiting it to earth? Come on...
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  4. If you count flagella, why not count the motion of bound electrons through a ring molecule as a door opening and closing? That way doors win.
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  5. Animals with wheels? "A structure capable of rolling continuously around an axle would be physically separated from the body and therefore impossible to build in a developing animal. (But lizards which drop their tails isn't impossible. Who says the wheel has to start off separated from the other part? Why not grow it connected, then have it fall off when it's reached the right size? Sort of like how babies grow?) Longer description of an imaginary animal: The main functions of the animal are in the wheel-like part. In the middle of the wheel, there is an axle-hole from which two horns grown outward, and upwards in a U shape. Once they reach the right length, upward, they start growing towards each other, pushing inward through the body,. The growth of the bones through the center of the body triggers development of lots of little feet around them, on the inside of the ring. Once the feet have developed enough, and the bones are sufficiently fused, the axle could 'fall off' the body, , but still be trapped in the ring . To avoid wear, the feet could exude some kind of fluid with bone-like inerals infused in it that could replace any worn surface... imagine it flowing out along he surface and smoothing off any dents or scratches it flowed over. (Like a plastic screen repair kits, but evolved.) By making the wheel itself the active part, and having an entrapped U shape axle, which drags along the ground (yeah, it will wear out eventually, but evolution just needs you to live long enough to reproduce) you can solve 'disconnected wheel' problem. Give me 20 minutes and I'll come up with a few plausible stages each of the parts could evolve through. I imagine it would need to give an enormous fitness advantage to the owner, considering how much inconvenience the U-axle would have while it was growing... perhaps the wheel body part also has other legs, and the axle mechanism is only used in special situations, like hunting, defense, or mating displays? (To others in the species, perhaps winning a race could be evidence that the holder has plenty of access to food and other necessary resources to live comfortably, and would so be an awesome mate?) So wheels aren't impossible but they are really unlikely. We just had an easier base creature with 4 limbs to start with instead of something weirder.
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