It's a pretty wild thought when you realize all of the miraculous systems intertwined to create a human body were slowly engineered over millions of years with the overarching purpose of "don't die but have sex before you do"

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It's a pretty wild thought when you realize all of the miraculous systems intertwined to create a human body were slowly engineered over millions of years with the overarching purpose of "don't die but have sex before you do"
Random biology fact I just discovered while learning more about gas exchange: lungs aren’t mirror images of each other. One has two lobes while the other has three.
the wildest part of it to me is that like 90% of those systems are common between everything on earth, and then like another 5% of them are common to every animal, and 4% of them are common to every mammal
god really took his time on that last 1% that gave us thumbs and anxiety
This has made many people upset and has been widely regarded as a bad move
Lately I've been thinking about how our bodies have upwards of trillions of machines that use a concentration gradient to spin a rotor that splits molecules apart. Those molecules then power everything else going on in our bodies. These machines got started by some emergent property of atoms (and subatomic particles, I guess?) 4 billion years before this stuff glomed together to be humans.
It's pretty wild how my body is inherently capable of breaking down all manner of substances into their constituent molecules for absorption and use, but if I happen to encounter a protein or two that I don't make the right enzyme for, it's shitsville for hours