Tlaloc_Temporal

@Tlaloc_Temporal@lemmy.ca

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Tlaloc_Temporal ,

I don't understand the meme. The figure is from a paper about false positive readings in MRIs, using a dead salmon supposedly thinking, and the meme is suggesting... the fish was alive?

Not much context + vague point = poor excuse for a meme.

Add the context that this is a dead salmon, then claim that salmon are immortal of something, idk.

The changing feel lemmy.ca’s front page

Back when I joined lemmy.ca, the front page was full of bicycles, city/province-specific community posts, and others like woodworking This morning, four or five of the front page posts were making fun of some crazy bikini lady(?). I read their “read this first” post and understand why they’re doing what they’re doing,...

Tlaloc_Temporal ,

Both Helldivers2 and PCGaming are quite popular communities, and both just happen to be hoasted on lemmy,ca.

The only recommendation methods right now ate various forms of popularity; there isn't any curation beyond you blocking communities and using the subscribed feed.

Tlaloc_Temporal ,

If you can get a copy of the ROM, or have access to a real calculator, you can get an emulator rubning actual software for free.

Tlaloc_Temporal ,

Those are good references. Very thorough.

Tlaloc_Temporal ,

That would make them scisexual or politisociosexual I guess.

Tlaloc_Temporal ,

I don't think it matters how big the thing biting you is, just how likely it is to rip bits off.

A weasel has nearly 4 times the Bite Force Quotient of a Moon Bear, but I'd take many Weasel bites before a single Moon Bear bite.

Tlaloc_Temporal ,

I don't know, even on his own podcast I found him more willing to sound right than be right. Not that he was wrong, just dropping nuance and exceptions for the sake of sounding absolute and axiomatically correct.

His words end up being easy to poke holes in if and only if you know what he's talking about. Thus I find it hard to accept what he says when I don't know what he's talking about.

Paper castles look good, but a short stone wall has a better reputation.

Tlaloc_Temporal ,

I don't understand the fear of digitization here. I understand that many of the tools are pretty crap at the moment, but I very much disagree with villainizing digital systems in general.

Tlaloc_Temporal ,

When I say axiomatically correct, I mean something self-evident or aligned with fundamental principles. An example of something that's axiomatically correct would be: "Gravity makes things fall down" or "Lines that aren't parallel will eventually cross".

Something that sounds axiomatically correct, but isn't, would be "What goes up must come down". It sounds true, and was practically true for thousands of years, but every spacecraft relies on it being false, that things can stay up forever.

I don't have an example from NGT off the top of my head, but this sentiment is why I'm not a fan of his, despite being very into space and astrophysics.

Tlaloc_Temporal ,

Voyager is never coming down. Even if we wanted to bring it back, we couldn't in this century, maybe ever.

Eventually it's slagged remains will find a black hole to rest in, which is a different down at best, but even the black holes will evaporate, assuming the universe lasts that long. This fate is so far beyond the concept of down that there must be nuance in the claim, especially when talking about astrophysics.

Every interplanetary craft defies the phrase, and even orbit demands a deeper understanding. "What goes up must come down" sounds good and covers everyday life, but just like Newtonian physics it breaks down at large scales.

Something axiomatically correct would always be true (for the axioms we have taken). Perhaps you could take "On Earth" as an axiom here, but that's a very restrictive axiom that you need to specify. Thus a more nuanced take: "What goes up must come down, unless it leaves the atmosphere."

Not that I'm using axioms very rigorously. They're usually used for math things. My informal usage was to evoke the sense of absolute truth. Of a statement so obvious that it doesn't need proof. I find Tyson speaks in terms of "this is" rather than "this suggests" or "we have evidence for". He speaks like an omniscient narrator speaking a story rather than a communicator of science.

Also, 'Falsity' is a word, and I think you're actually using it correctly; it's the opposite of 'Veracity' and also a noun for a lie or untruth. "The falsity of the statement" seems right, but it's also old and very underused. I think a better word would be 'Falseness', but 'Falsity' in neat!

Tlaloc_Temporal ,

The one with the plus at the bottom is female, the one with the arrow at a downwards angle is male.

Tlaloc_Temporal ,

Even worse, we don't know what black holes really are.

Is there a discontinuity in spacetime? Is the discontinuity point-like or spherical, or even toroidal? Do physics even exists within? Is "within a black hole" even a reasonable concept? We don't know! We're still arguing about wether black holes can delete information from existence.

Tlaloc_Temporal ,

I'd think that the aerosolized lead from leaded gasoline did far worse than any plastic or change in CO₂. There's still lots of volatile pollutants, like CO and hexavalent-anything out there.

Tlaloc_Temporal ,

Even easier, send fast-return probes to collect a hard record of locations. Who cares if your prediction models are to chaotic? We've already seen the destination!

Tlaloc_Temporal ,

We can just barely sometimes tell the difference between a small neptune, a large earth, an ocean planets, a coteless ocean planet, and a hycean planet. Trying to guage not just habitability but also terraformability is a ways off yet.

We can start with size and surface temperature though. We're not going to survive on a gas giant, and anything with a four digit temperature is right out.

Tlaloc_Temporal ,

That would make gravity just wafting farts.

At least we'd know that dark energy comes from some kind of hole.

Tlaloc_Temporal ,

Ohh, I bet one blue line and one green line would look amazing!

You could probably carve the wood to leave a wavy edge on the epoxy too!

Tlaloc_Temporal ,

Would an epoxy coating help with durability?

Tlaloc_Temporal ,

We use Leibniz's calculus anyway, and both were developed at the same time, prompted by the same paper. Newton just happened to publish first (I think) and was more well known at the time.

Tlaloc_Temporal ,

Depends on the cat. We could probably leave our cat completely alone for two weeks straight if the food pail was left open, not that he'd be happy about it.

Tlaloc_Temporal ,

It's the state of the industry.

And I know several automotive repair facilities that so incompetent it must be malicious.

Tlaloc_Temporal ,

You can bring extra air and survive just fine.

You can't bring an extra skull.

Likewise, a hermit crab can bring an extra shell, but a turtle cannot bring an extra shell.

Tlaloc_Temporal ,

Rough approximation: Earth as opposed to sky, becomes earth as opposed to sea, becomes earth as in the known world as opposed to the places we don't settle (sea, sky, hell, etc.), becomes the place we live as opposed to Mars or Betelgeuse.

We walk on dirt, we live on dirt, we live on Dirt.

Tlaloc_Temporal ,

Thaghome!

Better than Thagburgh.

Tlaloc_Temporal ,

What's wrong with dirt?

On a planetary scale, all soil is dirt, because it's all been displaced so many times from glaciers and mountains and oceans and taking part in the biosphere, you can't tell where each particle was originally weathered from or which plant first captured it from the air. No one can trace sod to a fault line.

It's hard to have a rich history when evwn sharks are older. I bet you can't even tell if a soil is from regolith younger or older than Pangaea!

Tlaloc_Temporal ,

I've always been a fan of "Slickle", the Carbon planet covered in grease and diamonds.

Tlaloc_Temporal ,

Not made by rain in this case though. It's more like Sun Dogs. Icebows?

Tlaloc_Temporal ,

More context:

This is a Santamartamys rufodorsalis, AKA the Red Crested Tree Rat. Only three specimens have ever been seen, and this is the first photo ever taken.

I found the original article from 2011. Species that are thoight to have gone extinct and then are rediscovered are called Lazarus Taxa, although I don't know if this guy would count since this is just the third sighting.

Learned something new about my cat today ( leminal.space )

Both are my cats but this is about the black one, Rowena. She’s 7 years old now and we got her as a rescue at 5. She seemed to settle right in at home but she looked lonely so a couple months later we got him, Colby Jack. He is both named after and literally a cheese, orange cats are truly something else. When we rescued her...

Tlaloc_Temporal ,

Some cays are definitely a bit higher on the brain utilization. My close relatives and I have seen cats ask for things, specifically do things they know piss you off in front of you, learn and play fetch, tattle on humans, attack door-to-door salesmen that were getting too pushy, and use a mirror to examine themselves. There's also stories of cats that got help from several miles away, woke up their humans when a fire started, chased bears off, comforted the dying specifically in their last week, and more than one that could rather reliably smell cancer.

And then there are those cats that are surprised when their whiskers are still there! XD

Tlaloc_Temporal ,

I wonder if anyone has scraped the text of that sub and hosted it somewhere.

Tlaloc_Temporal ,

For the same reason they still use pounds for anything.

Tlaloc_Temporal ,

Curses are probably replaced with "removed" for you.

Tlaloc_Temporal ,

"$6 shots? Can I get that in my own glass?" [They roll a novelty shot glass lawn ornament around the bar]

Tlaloc_Temporal ,

Ah, the extra spicy kind. ;)

Tlaloc_Temporal ,

That slice of cake is either a rock or the baker needs to be introduced to yeast.

Tlaloc_Temporal ,

On the other side of the yam from the cheese wedge. It's totally supposed to be a layer cake, but it looks like freeze dried ice cream.

Tlaloc_Temporal ,

Or 10, whatever. The precise value is only relevant when measuring the curve of space, and they'll still disagree with mathematicians on most of the digits.

Tlaloc_Temporal ,

If we're not calculating something useful, then why are we here and not in the library learing about the universe?

Better question: What curvature of space is necessary for the apparent value of π to be 5?

Tlaloc_Temporal ,

Not to mention that pineapples are far tastier than any raspberry I've ever had. Most recipes dilute the pineapple to avoid overpowering the other flavors, while raspberries often need assistance from citrus to really shine.

Tlaloc_Temporal ,

That's going to be less efficient per watt though, plant's are green because they don't use the green light, hence red+blue grow lights.

Not all plants reflect the same range of wavelengths though, and different plants will use different wavelengths to grow. This is basically an exercise in finding which wavelengths we can drop without significantly slowing growth for each plant.

Tlaloc_Temporal ,

That article just throws out a number. I found a couple papers that give green light absorption numbers between 50% (for lettuce) and 90% (for broadleaf evergreens). Sadly they are paywalled.

The paper that article links talks about pairs of absorption peaks targeting steep portions of the available light spectrum, as a method of reducing power noise in changing conditions. The reason for avoiding green light here would be because the spectrum is too flat around green: there are no pits to help stabilize incoming power. Despite blue light having nearly identical intensity, green plants strongly absorb blue light, supposedly because there's a steep drop off in intensity moving into purple and ultraviolet light. I don't think this explains the decently strong red light absorption though, as the terrestrial spectrum is still rather flat there.

I'd argue this is more a holdover from competition with simpler purple Haloarchaea in ancient oceans, the Purple Earth Hypothesis . Perhaps this avoidance of the otherwise strong green light is what allowed green plants to develop complex structures and those complex structures need much smoother power input, precluding the development of green light photosynthesis. Also possible is that developing new photosynthetic pathways is just too difficult, and green plants are too specialized to try.

Some of those specializations may be the use of green light to direct non-photisynthetic processes, detailed in this paper, which is also more directly relevant to the original point. Some green light increases yields significantly, despite maybe not promoting photosynthesis as efficiently per watt as red & blue light.

Tlaloc_Temporal ,

Wouldn't that be Etterra's razor? Or do logical principles work of the "first published" method of naming?

Tlaloc_Temporal ,

Avatar is American, but it had fantastic cultural consultants.

Tlaloc_Temporal ,

Neither is China.

Tlaloc_Temporal ,

We can both detect orange light, but the shrimp can also detect red light mixed with yellow light. We get tricked into also seeing orange, despite no strictly orange light being there.

Think of it like sound. If we heard sound like we see light, we would hear a chord as identical to a tone somewhere in the middle of those notes. Mantis shrimp can see chords of light without any mixing, seeing both colours rather than just a colour somewhere in between.

Tlaloc_Temporal ,

Have you seen false colour images of flowers or galaxies? There's definitely cool things to see, especially when getting into infrared light.

Tlaloc_Temporal , (edited )

If different types of cells looked different, we would have zebra stripes. I think only geneticly female people would though, for the same reason only geneticly female cats can be calico.

CORRECTION: This happens in both sexes. The difference between cells comes from whether each cell uses one parent's X chromosome or the other parent's. This decision happens when there's just 100 or so cells, so the different cells spread like rock layers as they divide, leaving stripes of them covering the body.

Tlaloc_Temporal ,

That's an after the fact justification.

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