Seems pretty dumb in our biological design to not be able to regenerate such a functional (and also easily breakable) part of our body.
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Or we were designed with planned obsolescence in mind. I mean, we can pretty much do everything to keep a human alive for a long, long time… But the cells themselves have an expiration date and after that point they simply stop replicating. It’s like the last puzzle to solve for figuring out immortality.
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It’s way easier to start new life after selecting amongst gametes than it is to keep an aging body alive forever.
On the contrary. Death is programmed.
Mammals have fuck all in terms of adaptability tactics. Only way for us to adapt, is mix our genes and hope it suffices. The only way we can do that, is reproduction (funghi are op). Now that means more of us in a system that has limited resources (called carrying capacity). We die in order to prevent competing with our children.
This is the reason animals have different lifespans depending on how likely they are to survive in nature. Take a rat and north american opossum for example. Far apart in terms of evolution and size, but have roughly the same life expectancy due to predation. Wolves can technically live up to 17 years, but become fertile at a very young age because the average lifespan in the wild is 5 years due to disease.
It is also the reason menopause exists. It is rare, and found in elephnts and orca’s (both matriarchial species) and humans. This is because the life experience of the matriarch is too valuable. To be able to keep the matriarch around without her being able to compete with her own offspring, infertility is incuded. Post-menopausal orca’s pimp out their youngest sons because it is the best way to pass on genetics they have left. Imagine your mom being your finman.
Humans are the odd one out here since we also have andropause, the male equivalent. A paradox on male reproductive strategy. Which afaik doesn’t exist anywhere else. This is why humans live so long compared to most mammals. Grandparents are important.
Some animals don’t really age. Lobsters simply die from growing too big and unable to get enough oxygen. Some species of octopi stop eating after mating all the way to starving to death. Some animals mate until they die from exhaustion. The immortal jellyfish pretty much recycles itself. And bot just animals need death for renewal. New zealand has a forest which reproduces only after a forest fire. Which happen rarely over hundreds of years due to being in a region with lots of heavy rain. The trees themselves are pretty much immortal, and don’t reproduce while living.
Senesence and death are essential for ecosysems and adaptation of life. Regardless of whether or not keeping an aging body alive is hard or possible.
We age because our cells “choose” to. We have the equipment to live on “forever.” It’s just not our meta.
Because they last long enough to reproduce. After that, evolution doesn’t care.
We need to make children later
That indeed seems to be the trend nowadays
Because when it comes to survival until procreation, you don’t need more than two sets.
No selection pressure after the age at which our adult teeth fail
This concept can be scaled up to a lot of things, like why most of our systems break down. Nature only maintains what is needed to continue the species, everything that happens to you afterwards, with the exception of child-rearing, will be abandoned by nature unless someone gains some trait from living longer that helps the species propagate.
But nature is kind of silly, it doesn’t make “choices” so some of the adaptations can be weird. Like how our retina’s blood supply formed on the front of the retina so your brain has to always edit out your blood vessels from your vision and you can only see it using special tricks of light and then BAM all the spaghetti appears that’s been there all along.
Imagine what else our brain tells us and shows or doesn’t show us to make sense of what evolution has turned us into.
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I mean… we grow teeth a total of 3 times. The first for our baby teeth, the second time for our ‘mature’ teeth, and the make up ‘wisdom’ teeth to fill any that might’ve fallen out at that point. I’m guessing those three growths were the most needed for humans early survival before we got all fancy with farming and hygiene. At which point we kind of broke survival of the fittest and things just kind of happen now.
Kind of like how humans are one of a handful of mammals that didn’t evolve out of menstruation.
Can you elaborate on mammals that don’t menstruate? I’ve never heard about that.
You can read more about it here.
I had to read more about it myself and I am mistaken in the origins of it. It’s not that most other creatures evolved out of it, we’re just one of the ‘lucky’ few to develop it.
Almost like there isn’t a God and we weren’t designed hey?
Uhh, ever heard of this natural selection thing?
we ended up not needing infinitely regrowable teeth
Sharks laughin’ at us talkin’ apes.
I think they are intended to, and they actually do… once (child teeth). Probably just broken due to genetic decay or environment (e.g. if humans are no longer fully maturing and what we call adult teeth are actually “intermediate” teeth). I suspect a deeper understanding of the recent tooth-regrowth drug(s) may provide a clue as to why it is currently broken.
There are VERY few circumstances in nature where someone in nature who gets all their teeth knocked out is gonna survive long enough to reproduce
You said it.
In nature.
“Population pressure and the stress of modern life may cause an increase in violent tendencies. The urban environment is the incubator for all sorts of undesirable behaviors…”
Shoulda been a rodent
🥰
There are no stupid questions. But there are grammatically flawed questions.
I tried to rephrase his question in my head, and I ended up with “Why do not teeth degenerate.”
I need sleep.
English dos do be done daft. https://inv.us.projectsegfau.lt/watch?v=6lhxxiqqlQY&t=293
Title gore
You want actual gore?
My personal theory is that this mutation among humans would lead to older members of the tribe living longer and being more of a burden on the younger members.
I think there just hasn’t been an evolutionary need for them to regrow. In past millenia, people had kids and died before toothlessness really became an issue and teeth lasted longer before our modern industrial diet.
