What is the evolutionary purpose of not having 1 big nostril instead of 2 small nostrils?
>>17030972dolhpins solved this
>>17030972same reason you put a grid on any air intake in any machinery
>>17030972I don't know why animals evolved two nostrils but two things come to mind. We have evidence animals use stereo smelling and differences in concentration to help detect the source of scents. The other is in humans atleast the nasal cycle of alternate closing of each nostrils seems to play a role in decongestion and allows membranes to rest and recover.Possibly of misleading relevance to this conversation, but there is a large risk in patients who undergo excessive or unnecessary turbinectomies or turbinate reduction surgeries can result in quite torturous side affects as the passages drys out and becomes damaged making it very difficult to breath and significatnly reduces quality of life. It is unclear what this means from an evolutionary perspective if this is merely a symptom of traumatic surgeries to address uncommon issues or if this tells us an essential function of nasal function dictates nasal passage size and could not be evolutionarily mitigated by other means.
>>17030985Humans are engineered to have certain air intake?
>>17030972probably particulate filtration. you have cavities in the front of your skull that are meant to 'condition' air before it goes into your lungs. part of why its important not to mouth breathe
>>17030972streamlined and evolutionary optimized for supersonic air intake
>>17030972judging by the rendering it was selected against because cavemen would try to stick their dicks in the hole and would cause brain damage or other lethal head trauma
It's just bilateral symmetry. Like our eyes or ears, our proto-nostrils initially develop on either side of the head in embryos and only later converge to the front. It doesn't make a fused hole quite impossible but the design is significantly biased towards dual nostrils/nasal chambers unless it's strongly selected against. Even elephants or baleen whales still have dual nostrils/blowholes. Toothed whales/dolphins manage to have a fused opening that still immediately branches out afterward, and in some clades it's actually asymmetric (one proper, offcenter nostril + a more vestigial one that doesn't have its own hole.)The only vertebrates that have a true fused nasal chamber/passage are probably cyclostomes (lampreys and hagfishes, which diverged before fucking jaws were invented)
>>17030972You actually only really breathe through one nostril at a time. This lets the other rest, otherwise it'd get all dried out and you'd never have time to rehydrate and replenish the mucus.
>>17030972...would
>>17030972So that people don’t try to have nasal sex
>>17030985What is that reason?
>>17030972Hairs for filtering in the nose can't grow both sides with one nostril.
>>17030972One nostril would dry out too easily.https://en.wikipedia.org/wiki/Nasal_cycle
People who put their dicks up big nostrils didn't reproduce.
>>17031659Actually no. My old gf used to do this. As far as she was concerned every orifice in my body existed for the sole purpose of her fucking it with her tongue.First it started with my ears. Like she quite literally jumped me and raped my ears. I confess I nearly jumped out of my skin the first time she fucked my ears. It was just so unexpected. But it also felt great. So I encouraged her to do it again. And again. Have you ever had a tongue shoved in your ear? For God's sake try to get your bitch to do it, its fucking unreal. ( Obviously having good hygiene is important )Okay so the next thing she did was fuck my belly button with her tongue. That wasn't anywhere near as good though, sort of felt weird, I told her and so she moved on to my nostrils. Very gently, but it was rape all the same. Sweet Mother of God, I could just lie there for ages as she worked her way across my nostril, mouth and ears before settling on my dick. The only thing was I felt a little bit homo for being penetrated so much. But I enjoyed it so much and you know it was good not having to be the one to do all the work. Anyway as you can probably guess it wasn't long before she had progressed to the next hole. Jesus fuck. Talk about mind blowing. Yeah, when I look back on the whole experience I guess you could say she made me into her bitch. No homo though. The only sad thing is that it ruined vanilla sex for me. After we broke up I naively expected most women to be at least a bit freaky. Protip. Asking a gf to fuck your ears and nostrils with her tongue usually doesn't go down well. Even if you tell them you have thoroughly cleaned everything. Why are most women so boring?
Beauty probably. Beauty comes from symmetry. Draw a straight line down someones face and the most beautiful people in the world are pretty much symmetrical. Da Vinci did that thing it the man. Symmetry is in pretty much everything in the universe and just how things form, most of the time.
whales have asymmetrical nostrils
>>17031662I think it's for debris>>17031695what is wrong w/ nose fuckers
>>17030972a functional human has one nostril in use while the other one is in maintenance mode. it's called the nasal cycle.
>>17030972God found two nostrils more aesthetically pleasing, so he went with that.
>>17032041What was god thinking when he made harlequin babies?
>>17032041>godno it was the roasties that decided thatancient incels with single nostril died out
>>17032060He didn't want humans to stray from the natural order by allowing retarded dysgenics to breed or having their children survive past childbirth via modern medical intervention. That's why God favored Abel over Cain.
>>17030972Are you retarded OP? A single hole would be hugely susceptible to injury.
>>17031042>It's just bilateral symmetryTHIS.
>>17031659kek
>>17030972directional smell sniffing (similar to earing)if you injure your nose, 50% may still workmore internal surface, more filtering shit coming inwarms and humidifies air better coming inmajor pressure regulation when pantingdolphin and whale have 2 nostrils internally
>>17031659>>17031695>She asked if I wanted a nose job. I didn't think that's what she meant!
>>17031695They countered it by putting their noses up the..
>>17032430>>17030972>the evolutionary purposeFailed evolution I see.>evolutionaryFirst you answer why dolphins do not have gills!1)Evolution is a greedy algorithm2) All animals have bilateral symmetry.>b-b-b- see point 1!
>>17030972One can get blocked, 2 can't? Isn't it always something simple like this? Though I think it likely has more to do with the use of the nostrils, eyes, hands, etc. We smell, hear and see in 'stereo' that is to say that having 2 of these things is what gives us more of a 'surround sound' style use instead of something more basic. 2 parts wired into a singular brain making sense of inputs from varying directions = true 3d. Also you might as well ask why does the body tend to make 2 of most of its parts but 1 of the ones most vital, like the heart? Isn't that a more interesting question.
>>17030972>evolutionary purposeStop thinking there needs to be a secret advantage to every physical trait.All natural selection means is that shit that helps us or does nothing is statistically more likely to be passed on than shit that actively gets us killed.
>>17030985spbp
>>17031011This is the most accurate assessment. Someone evolves that big hole, someone else is fucking it and killing them.
>>17031066Im breathing through both right now
>>17030972God has two.
>>17030972 https://en.wikipedia.org/wiki/Redundancy_(engineering)
>>17031066>You actually only really breathe through one nostril at a timemore specifically, one nostril breathes "harder" than the other, they switch during the day
>>17031066>>17033658the nasal cycle also has a substantial phase where both nostrils are unrestricted
