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This is the meme that set off Cylon Number One (aka John Cavil) and eventually lead to the attack on the 12 colonies.
I am biology illiterate. Explanation please.
Octopuses don’t have a dead spot in the eyes I guess
Scallops, oysters, mussels and clams have anywhere between 40 and 200 eyes. https://en.wikipedia.org/wiki/Mollusc_eye
I wonder if that afforded some level of protection to the surface dwellers’ receptors when in direct contact with high levels of sunlight.
If vertebrae don’t have it, it means they don’t need it.
No, you are 100% wrong.
that’s not how evolution works. Evolution is not able to produce global maxima, only local maxima.
Not really. Needs is a fairly strict word. If it was needed they would not survive without. Useful, i agree with you
Dont they eventually produce global maxima by iterating towards it through the many degrees of freedom allowed by crazy mutations and time?
No.
Imagine an alligator. Quite good at catching prey with their current anatomy.
An alligator that shoots laser beams for tracking and bullets would be even better. There’s however no path from their current anatomy to this state, regardless of the randomness and timescale for mutations. In fact, in order to achieve this higher state several non advantageous intermediates would be necessary and therefore never selected for.
So no, evolution can’t achieve global maxima, it can however optimize the shit out of what it’s given to work with.
Quick way to find your blindspot:
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Close your right eye
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Hold your phone/monitor 1ft (30cm) away from your face
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Look at the ‘x’ below with your left eye
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Slowly bring your phone towards you (or your face towards the monitor) until the ‘.’ disappears
. x
The
.is not visible to me at any distance without taking my eyes off thexWell
It doesnt
Your username says you’re an owl, but you’re suspiciously squid shaped
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convergently evolved eyes, cephalod pod eyes evolved very differently from tetrapods. cephalpod eyes evolved by forming an invagination of those tissues. whereas the tetrapods evolved as extensions of thier brain.
plus cephalopods eyes are more like a camera, the lens move back and forth, instead of changing shapes. they do have exceptions which allows them to simulate eyes of tetrapods. they also possess the ability to regenerate thier eyes too.
Having a larger focal point farther back from the aperture should also reduce parallax, I crease field of view and improve depth perception.
This arrangement actually optimizes color vision in the daytime and night vision at night. Evolution selected for the correct arrangement for those of us living on land:
https://theconversation.com/look-your-eyes-are-wired-backwards-heres-why-38319
This is just saying that the glial cells help make this less bad than it could be, no? Nothing about why neurons behind receptors would be worse
This is one of many reasons the perfect eye argument by creationists is utter bullshit.
As someone with chronic back pain, eyes are the least of my issues with creationists theories
exactly, bananas - amirite?
Ugh that drives me crazy. The human eye is a perfect example of observable evolution. Organisms exist with every stage of eye development, from a photosensitive spot to a more advanced convergent evolution of our eye. And the human eye is poorly designed for it’s current use, resulting in a significant percentage of people requiring corrective lenses.
It’s a good example of evolving towards a local maximum then being unable to travel through a valley to a more optimal design. As such it confirms exactly what evolutionary theory would predict, and not what “intelligent design by an omniscient creator” would predict.
most of the dipshit “the eye is to perfect to have evolved” people also have cheap optics on their rifles. something to think about
You’re just jealous of GWOT surplus carry handle mounted AR optics because they remind you how evolution didn’t grace you with eyestalks 🐌
It’s called a carry handle not an optic handle, God would never create such an abomination checkmate theists.
I wish i had eye stalks.
😭
Yeah, my eyes are so perfect, I read that as ‘cartoonists’ and spent a good few minutes confused.
Clearly this means God’s chosen are the cephalopods.
🧑🚀🔫🐙 Always have been.
🧑🚀🔫🔫🔫🔫🔫🔫🔫🔫🐙
Always have been.
😮🫘🫘🫘
Always have beans.
🫡 👖 👖 👖
Always have Jeans.
In the lore of Lord of the Rings, it is said that the supreme being of that universe personally created both men and elves and since men were his favorite creations, he gave them the gift of… having pretty short lives (wow, thanks). Well, octopuses have a much shorter lifespan than us, so if our universe’s creator is anything like the Middle Earth’s then there’s a good chance they are his favorites.
isn’t middle earth wholly explicitly our earth? and thus eru iluvitar is explicitly the creator of our earth.
It’s been a while, so correct me if I’m wrong; but isn’t the gift moving on to something else after a mortal life? If I recall correctly, elves are stuck in the physical world forever. Even when they die don’t they just go to some limnal place for a while then come back?
Recycling without memory wiping? What a lazy ass.
Essentially, yeah.
Elves’ spirits either linger in Middle Earth or go to the Halls of Mandos in Aman. After some period of time, they can be re-embodied if they choose.
The souls of men did not linger, they were called to the Halls of Mandos upon death. Their souls would stay for a while in Mandos, separate from the elves, until they departed the Halls to only Eru knows where.
until they departed the Halls to only Eru knows where.
Isekai followup when?
Because of this we have blind spots, one for each eye. They are not usually noticeable because 1) the blind spot of one eye can usually be seen by the other, and 2) the brain fills in the gap.
So with this I will perform a magic trick, I will make your thumb disappear: Close your left eye and with your right look at a spot in the background, make a thumbs up gesture and place the tip of your thumb on that spot, move your thumb to the the right continuing to look at the spot in the background, when your thumb moves about 15 cm your thumb should disappear.
You can use your left eye too, just switch the directions.
It looks like there’s just a gap in spacetime or something.
By the way, your eyes are not meant to track your thumb when doing this, you have to keep still and move only your thumb for it to work, so don’t move your eyes.
Woah, i didn’t know that the effect would be so drastic. I want to point out to those struggling to get it to work that, as diverging mentioned, your arm needs to be fully extended. Also, the blind spot is about a thumb’s width, at least for me, and is only visible at a specific x/y axis location. Any deviation from that single spot will cause it to stop working. I could tell I was close to the spot when parts of my thumb would disappear, and just had to slowly move it around until I found the spot that looked like the thumb was gone completely.
Succeeded, thanks! That’s uncanny!
the brain fills in the gap
To expand on this, current leading theory (predictive processing) says that brain first generates a visual image then confirms it with inputs and if there’s no input to confirm/deny the halucination it’s just accepted as is. So we can have a whole load of blind spots in all of our sensors and continue functioning rather well with an ocassional artifact.
AI witchhunting crowd hates this one simple trick !
I think about this at night when my eyes are forced to attempt to make sense of the low light levels in a dark room. I know my room isn’t grainy and grey-scale - that’s just the best my eyes and brain can do at night. It’s interesting to look around and try to imagine the proper colors and shapes of things, reckoning the difference between what I know and what I see in the moment.
With our brains constantly making things up to explain gaps in information, it’s no wonder kids think they see “monsters” in the dark. It’s also no wonder that nightlights work well to keep said “monsters” away.
It’s way too late at night for all those directions, somehow ended up creating my own blind spot by sticking my thumb in my bum.
Well, I guess your thumb disappeared.
I can try another way the blind spot is about 15 cm at arms length to the right of the right eyes center of vision. So put your thumb there and it should disappear
At least your dick didn’t get stuck in the toaster.
I couldn’t make it work. But I did notice that the spot in the background changed focus a tiny bit at one point. I suspect my brain was tracking the thumb and simply refused to continue to truely focus on the background spot. I tried and tried, but just couldn’t make it happen. Neither eye. :(
Found the cephalopod
Make sure to hold it at arm’s length, if you weren’t already. If it’s close to you it’s too big to vanish into the blind spot.
What is a “spot in the background”? Like where exactly
Anywhere. It makes it easier, if you have a dot or a feature to look at, but really it’s anywhere in the distance. I guess generally straight ahead.
✅ Discount number of limbs
✅ Cheaply made eyeballs
✅ Held together with a bunch of inflexible bones
Wait, am I just an off-band octopus?
Damn.
- just one brain
More mindflayer propaganda.
ph’nglui mglw’nafh Cthulhu R’lyeh wgah’nagl fhtagn and so on
https://en.wikipedia.org/wiki/Cephalopod_eye
(At a glance, this article needs some touching up and hasn’t been meaningfully contributed to in some years.)
Not sure if all but at least 7. - 10. are extinct.
Lol, at first glance I thought this was a poster for some new movie. All we need to do is change the font of “Cephalopods” to something exciting, and arrange the listed species as if they were actors’ names.
I’ve said it for years, as soon as it’s commercially available I’m getting photoreceptors realignment surgery.
Do I understand correctly that our ancestors had left the water before this upgrade dropped for fish?
I don’t think you understand correctly. The cephalopod eye and the fish eye (which includes tetrapods) evolved independently.
