Colorblindness check!

callmepk@lemmy.world to Lemmy Shitpost@lemmy.world – 607 points –
110

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What is this wizardry?

๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚ the wonders of unicode / utf-8

it the reason why you can post in any imaginable writing system from ancient sumerian complaints in cuneiform ๐’‚๐’€€ ๐’ˆพ๐’ข๐’…• to the goddamn seraphim o "ัะตั€ะฐั„ะธะผะธ ะผะฝะพะณะพ๊™ฎา„ั‡ะธั‚ั—ะธา„" that was used exactly once in a single 15century manuscript.

its also the reason you can post emojis nearly anywhere.

Yeah, UTF-8 is great, but ASCII had a character that made a sound.

The first 127 or 255 characters of UTF-8 are just ASCII if I'm not mistaken, for backwards compatibility with ASCII-based systems

How dare you write the name of a man who sells inferior copper!

I love that we have so much type of o-s. These are all different characters:

oะพฮฟึ…๐œŠ๐›๐„๐พ๐žธ

I'm at a loss

Me too! I'm glad the image is in a lossless format though

Can someone help me out here? I'm lost.

The circles have Roman numerals. A is 1, B is 2, C is 2 again and D is 1 plus a hidden Saddam Hussein.

Semi interesting story. Was driving my exwife around the city and noted how the color tint on one of the buildings as cool. It was a checkerboard pattern or something in different shades of blue/green. She couldnโ€™t see it and said it was โ€œglass coloredโ€. She couldnโ€™t really get how the glass was tinted a color.

Anyways printed out a handful of these and yep, she had partial color blindness. Thatโ€™s how she found out.

Thatโ€™s fascinating! Colorblindness in XX women is very rare! Is her father colorblind?

As I understand it the genes for our cones comes from the X chromosome. So for women to be colorblind, their mother has to have one faulty X chromosome and their father has to be colorblind, so the woman can inherit two faulty X chromosomes.

Whereas men just need to inherit one faulty X chromosome from their mother and the Y chromosome from their father.

(Sorry, Iโ€™ve always been fascinated by color blindness. I had a friend in college who was quite bemused by how many questions I had for him when I learned he was colorblind.)

This is true for only red and green loght detecting proteins (opsins) - the blue opsin gene is on chromosome 7.

The red and green detecting proteins have an interesting history in humans.

Fish, amphibians, lizards and birds have 4 different opsins: for red, green, yellow and blue colours. And the blue opsin sees up into the ultra-violet. Most animals can see waaaay more colours in the world than we (or any mammal) can. So what happened that makes mammal vision so poor?

It's thought that all mammals descend from one or a few species of nocturnal mammal that survived the catastrophe that wiped out the dinosaurs at the end of the Cretaceous. The colour detecting cells (the cones) need a lot of light compared to ones that see in black-and-white (the rods) and therefore nocturnal animals frequently lose cones in favour of the more sensitive rods for better night vision. The mammals that survived the Cretaceous extinction had also lost the green and yellow opsins while keeping red and blue - basically the two different ends of the light spectrum.

Consequently today most mammals still have only 2 opsins so your cat or dog is red-green colourblind.

Why do humans see green? Probably because our monkey forebears, who lived in trees and ate leaves, needed to distinguish red leaves and red fruit (visible to birds) from the green background.

But how did we bring back the green opsin? A whole section of the X chromosome (where the red opsin is coded) got duplicated in a dna copying mistake and then there were two genes for red opsins. As there are different alleles (versions), they could be selected for independently and so one red opsin drifted up the spectrum to be specific for green. So our green opsin is a completely different gene to the green opsin in fish, birds, etc. This kind of evolution happens a lot which is why, for example, there are many families of similar hormones like testosterone and estrogen. And steroids too.

Fascinating. Thanks for taking the time to type it out

Why do humans see green? Probably because our monkey forebears, who lived in trees and ate leaves, needed to distinguish red leaves and red fruit (visible to birds) from the green background

We donโ€™t evolve things cause we need it, evolution is driven by random mutations. Also we keep it if itโ€™s better and helps us stay alive long enough to breed.

I mean, you're really just arguing the semantics of phrasing.

Developing the ability to see green through random mutation was potentially an evolutionary advantage that allowed them to become better adapted to survival. Which is what they meant by "needed."

We donโ€™t evolve things cause we need it... Also we keep it if itโ€™s better and helps us stay alive long enough to breed.

Why do humans see green? Probably because our monkey forebears, who lived in trees and ate leaves, needed to distinguish red leaves and red fruit (visible to birds) from the green background.

I feel like OP covered that.

Thatโ€™s interesting!! I donโ€™t know! We went to the eye doctor and they confirmed (she didnโ€™t totally believe me). She wasnโ€™t in contact with her father and I donโ€™t know if she ever discussed it with her mom or sister.

Another possibility is that she's XY, but the Y never activated, so she developed female but with a single "faulty" X chromosome.

I don't remember my biology classes well enough to say, but wouldn't that also mean that potentially neither of her parents were colorblind, since the Y would've come from her father while the faulty X would've come from her mother? And, if she were XY in this scenario, wouldn't that mean that she'd pass that trait along to her kids as well?

if she were XY in this scenario, wouldn't that mean that she'd pass that trait along to her kids as well?

I could be wrong, but I donโ€™t believe XY females (Swyer syndrome) produce eggs and thus cannot bear their own children.

But a colorblind XX woman who can bear children would give birth to colorblind sons and, if the father of the child is also colorblind, colorblind daughters.

So this is either something vulgar which I (a person experiencing colorblindness) cannot see, or, there are no shapes in those bubbles at all. I think it's the latter since I can't see shapes in either bubble.

EDIT:

Oh it's that

i iI Ii I_

thing, which I never understood

https://cad-comic.com/comic/loss/

Context: dude made an autobiographical comic more serious in tone than his usual work, and the Internet has been mocking him for it ever since.

None of which makes sense without the context of what a enormous jackass Buckley had famously been in online spaces for YEARS. It's not just that loss was a weirdly serious addition to a silly comic, it's that it perfectly encapsulated the kind of sanctimonious self-important attitude Buckley espoused and instantly turned his shitty online persona into a joke.

I don't know if it is genuinely possible to still appreciate loss the way it was without all of the enormity of that context.

I think Cyanide and Happiness did a good job encapsulating your point and why everyone clowned on it at the time.

https://explosm.net/comics/dave-tim-actually-said-this

And as the image title implies, Tim actually said this.

This is just one example of the kind of shitbag Buckley was notorious for being

I used to feel this way but ultimately, what happened was tragic, even if it happened years prior. He expressed it publicly and some folks probably felt โ€œseenโ€ at the time. Thatโ€™s a good thing. Talking about/hearing stories of trauma and loss and grief can be very empowering for folks who have experienced their own.

Like donโ€™t get me wrong: yes he was (is?) all those things you described. No he was not a model messenger for this story. But that was a serious loss and I think at some point folks need to recognize that weโ€™re all human and maybe we shouldnโ€™t attack someone working through the loss of their child. Even if we feel they donโ€™t deserve to express themselves that way.

Maybe Iโ€™m missing elements of the story but I guess Iโ€™ve just never been able to square why it needed to be this ruthlessly mocked. Itโ€™s been like 15 years.

Man, at this point some sociology student could probably write a dissertation just on the cultural context of this comic alone. Both the stuff you're talking about regarding de-stigmatizing talking about trauma (and miscarriage in particular), and the way the comic itself has been meme-ified and distilled down to representations as abstract as ".:|:;"

I see your point and don't entirely disagree, I'll just its hard to feel bad about somebody suffering the consequences of their own actions (not the miscarriage obviously, but the reaction to it).

You don't really get to complain about feeling alone when you're the one that burned all the bridges that lead to your house, imo.

Maybe so but Iโ€™d still help them.

_โ€œ10 percent of any population is cruel, no matter what, and 10 percent is merciful, no matter what, and the remaining 80 percent can be moved in either direction.โ€_ -Susan Sontag

Thank you for being part of the merciful 10%.

Iโ€™d say that is too generous of praise but thank you. I try to be part of the merciful 10% for sure. Never heard of this before but I really like it

It isn't overly generous, you yourself said it, "...I'd still help them."

I'm glad you like the quote, thank you again for living it :)

Even after that, I don't see the connection.

It's really surprising that something so obscure became a meme. What's the first instance of the comic being represented with line segments like that? How did they come to be recognizable?

The original comic was rather popular at the time, and as a result, it became an early meme before mass-scale meme culture had really taken off besides doge memes and "I can haz cheeseburger." So it quickly entered the cultural zeitgeist of the early internet because the kinds of people into memes and gamer culture at the time would've been about the size of the terminally online crowd today.

For those who want to see what at least protonopia might see:

And for those color blind people that might want a shifted perspective:

I remain baffled by this. But since I can barely differentiate red and green in optimal lighting conditions, it does not come as a surprise.

So still very visible

Hmm, did it look different from original? Wonder if I messed up and uploaded the wrong thing..

I can't see the left ones and the top right is a bit hard for me to see. The bottom right for me is more legible in my first picture.

They absolutely look different from the original.

Colors seem to have shifted a bit. And they symbols are harder to see. But for me I can still see all of them.

I want to hate this, but it's actually a clever bit. Take my upvote.

I read ctrl,alt,del in like 2007 or so. Why is this suddenly popular again?!

It isn't suddenly popular again. Loss memes have been continuously popular the whole time.

It must be me than. I hadn t seen it in ages before coming to lemmy.

Congratulations on not being terminally online!

How would I know if I can see all the...? Oh. Well played.

I could truly only make out D, and I still already knew.

Edit: lol, what are you people down voting for? The fact that I'm actually color blind or the fact that I recognized an incredibly overused meme with only one of the 4 panels?