50 Oddly Satisfying Things To Soothe Our Perfectionist Souls

I don't care what the angle is, that parking lot is much smaller.

I completely agree. It's very beautiful!!! Even though you can't see all of the colours, you grasp and appreciate what it's all about and that's the most important thing.

Good description.

No, it's because color vision is on the X chromosome, and it's easier to get a messed up copy and not have a backup with XY. Color blindness is why red tigers can hide in green jungles, prey is red-green colorblind. If red and green look the same it's hard to see, while those that can see the difference have a better chance of survival. At most, it could be related to seeing ripe vs unripe fruit, but definitely not because "being colorblind helps us see predators"

I've heard that women actually tend to have a better sense of minor color variations because they were the gatherers. This allowed them to better determine which berries, etc. were ripe or differentiate between poisonous and nonpoisonous varieties.

You don't have to bring hunters and gatherers into it!!! The genes for red and green receptors are located on the X chromosome. If on of them is crap, women have a spare but men don't. Having 3 receptors rather than just two is a fairly new evolutionary addition in primates, so it hasn't yet really "settled" genetically. The red and green receptors are still detectably evolving and diverging, other than the old and established blue receptor. No benefit of just seeing two colors AFAIK - just a recent evolutionary event that happened on the X chromosome.

Naw, that's not how genetics work. Colour-deficiency is a recessive genetic trait. It's located on the X-chromosome, so it has to be passed on from the women. Because men have xy and women have xx, it means that only one (faulty) allele was needed to express this specific trait. Let me explain a little bit more:

It’s got nothing to do with natural selection and everything to do with the Y chromosome. The same reason men are way more likely to have something like haemophilia

4: So, your explanation on why men have this far more often than women is a bit out of the "Just so-stories". In fact, it's the women who had to pass on that particular trait and the men had to just bear the consequences. You are probably not completely off, though, since if the trait would have been heavily impacting the ability to survive, it would have been weeded out a long long time ago. It might truly be helpful while hunting, but that wasn't the reason it expressed in the first place, or why it stayed in the population. In women, it can be hidden (two genes, one faulty and one normal - you wouldn't know there's a 'faulty' gene somewhere in her and if she always bore girls or only healthy boys, it could take generations for it to be noticed) but not in men.

3: For r/g-B to express itself in the person, the mother-DNA must have carried the faulty gene-expression and passed it on to the child. Normally, if this gene wouldn't be sitting on the x-chromosome, for someone to turn out r/g-B, the father would have to ALSO have the faulty gene. (Because if he didn't, the dominant 'normal' gene would just overrule the faulty one) Since it IS on the x-chromosome, it's enough for the mother to pass on the faulty gene since the father passed on the Y-chromosome and it is incomplete and has no gene-expression for this trait itself. If the child were to be a girl, it would need two 'faulty' genes for her to turn out r/g-B. There is a small percentage of women who are so-called colourblind, which means in those cases, the father passed on a faulty gene that was sitting on the X-chromosome. But usually it's men who are r/g-B (as you said) because they lack the second set of genes to block the deficient vision-trait.

2: When you are created, you get half of your genetic traits from the mother and half from the father. Sperm and egg have only half of the DNA in it, so when they meet they create a new strand of DNA out of two different parent-DNA. Some of the genes are located on the gender-determining chromosomes, the Y and the X. Basically, the Y-Chromosome is faulty and is missing a lot of things that the X has, so when an embryo is male, the genes sitting on the x-chromosome (Which is passed on from the mother) usually express themselves since there's no counterpart from the father. Deuteranopia is also a recessive trait. Meaning that the "normal" vision is dominant and will express itself even when the genes from the other parent are 'faulty' (= deuteronopia - I'll call it r/g-B for easier writing now) (tbc)

You don't, really. As someone with deutan colorblindness, the people around you either figure out what you mean when you refer to the "blue one" or the "orange one" of something. Or they tell you they have no idea what you're talking about.

At least in my own experience, it varies depending on the hue, value, and chroma of a particular color. Below a certain value many colors look the same to me. Low-chroma "neutral" colors also blend together. It's a real pain to pick out paint colors with me, because the only ones that appeal are high-chroma ones, that are often hard to coordinate (for the people who can see more than I). I prefer to buy returned or mis-tinted paint because the selection is narrowed down from infinite indistinguishable colors to 7, and three of them are pink, so I really only have four choices. I can handle four.

Ann T, did you just think out loud?

Red-green coloblindness means inability to distinquish between red and green. They can see green, but they cannot see the difference between green and red. Thus, all they see is different shades of green.

Found the asshole.

right click on the image, and select 'save image as'. Though the file quality might be lower. In any case, I think I'm a bit of a background-snob. Fractalsponge.net Fractal is an 'amateur' 3d artist, the website is all his work, and is mostly Star Wars Imperial ships from the EU. What makes these great backgrounds is that 1) the background is solid black (making it possible to have neat rows of icons clearly visible), 2) he's amazing, 3) I'm a nerd and star wars ships. if you hop a link, that work is his...uh... hobby.