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Wild and Weird Radio Episode 94 "Kardeshev Scale"


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If it’s OK I would like to post here some food for thought.

 

I think aliens will look a lot more like us than we realize. Why? Convergent evolution.

 

https://en.wikipedia.org/wiki/Convergent_evolution

 

Assuming carbon based life has a narrow window in which it can thrive. The Goldilocks zone. I actually think it’s safe to assume that life from single cell to sentient species will have the relatively same environmental pressures and natural selection to create similar trajectories.

 

Im not saying aliens will have 5 fingers or two arms. They won’t look exactly like us. Just as a Shark and a Dolphin have differences. But a alien sentient species will look similar to us. And it will behave similar to us. Why?

 

In order for tool use to evolve? You need stereoscopic vision that creates depth perception. You need at least two arms. And you need fingers, pinchers, suction cups, etc to hold and manipulate Stone tools. Predators have stereoscopic vision, prey species do not. They may go on two legs, four legs, whatever, but they need grasping appendages to work tools and grow bigger brains.

 

Children often call whales….. fish. And for good reason. Fish swim in the water. And so do whales. They do not breed the same, give birth the same, hunt the same, acquire oxygen the same, etc. But they do have similar body shapes. Mammals who gave up on land. Regrew fins and why? Because to be competitive the ocean demands it. So also goes for Dinosaurs. Mother Nature and King Neptune demand the same thing from very different families of animals. And it happens over and over and over again on Earth.

 

So too will it be on other rocky planets with liquid water. 

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BTW. Loved the podcast!

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i agree with that actually. if you look at a lot of early experiencers reports, all the  way back to the Hopi, ancient Chinese, and Mayans their reports were of contact with beings that were much like themselves. 

 

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