Activity for System
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
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Answer scoring and ordering Overview On Codidact, answers to questions are sorted by their scores, so that you'll see the best-received answers first. Each answer has a score based on a ratio of upvotes to total votes, weighted to favor posts with fewer downvotes. For example, a post with seven upvotes will be shown higher ... (more) |
— | almost 4 years ago |
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So you're a moderator now So you've been given moderator status on a Codidact site. Welcome! This is what that means for you. Your community is your community Codidact communities are community-run. Codidact is here to support you and your community, but you make the decisions about how you run things yourselves. We'l... (more) |
— | almost 4 years ago |
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Search options While searching on a Codidact site, you have several options to help refine your search and make it easier to find what you're looking for. Searching will search all posts across that site, including Questions, Answers, Meta posts, and whatever other post types your site may have. Basic keyword s... (more) |
— | almost 4 years ago |
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Guidelines for referencing and quoting When you're writing a post, referencing and quoting external material is a great way to back up your posts, provide sources, and increase the quality of what you're writing. There are, however, a few things to keep in mind when quoting external material. Referencing online material When you... (more) |
— | almost 4 years ago |
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How to ask a great question The best way to get a perfect answer to your questions is to ask a great question. The better your question is, the easier it will be for someone to be able to give you the answer you need. Here are a few things to keep in mind when asking questions. Make sure your question is in scope Every Codida... (more) |
— | almost 4 years ago |
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Categories and post types In addition to just Q&A, here on Codidact each site can also add several different categories of posts. This is useful for different types of knowledge sharing, as well as for site activities and community building. These categories can contain different post types. Post types Currently, we have ... (more) |
— | almost 4 years ago |
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How to write good alt text What is alt text and why should I care about it? Alt text, or an image description, is what shows up in place of an image when that image fails to load. It's also what a screen reader will read out when someone is using a screen reader to browse the site, as well as what search engines and feeds ... (more) |
— | almost 4 years ago |
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Formatting Posts Codidact uses the CommonMark implementation of Markdown for formatting posts. Italics You can italicize a word by placing a single asterisk () or single underscore () around a word. Either Codidact or Codidact will render as Codidact. Bold You can bold a word by pl... (more) |
— | almost 4 years ago |
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Writing a Rigorous Science Post All posts on Scientific Speculation should be grounded in real-world science, and we encourage users to give a reasonable justification for their ideas. However, we want to give question writers some flexibility to decide what "reasonable" means to them. The Rigorous Science category is designed fo... (more) |
— | almost 4 years ago |
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Scientific Speculation FAQ Welcome to Scientific Speculation! We're glad you're here. The following information is relevant primarily within this community. If you have a question that applies to the entire Codidact family of communities, you may want to look at our Global FAQ or Global TOS. What is t... (more) |
— | almost 4 years ago |
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What events would trigger linguistic hyper-evolution in a spacefaring civilisation? Let's say that in an alternate universe, humans developed on a relatively small supercontinent, so their languages and cultures were somewhat similar. After a while, all of the nations merged into one nation with the same language. Soon afterwards, they developed interstellar travel and proliferated ... (more) |
— | about 4 years ago |
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Mechanism behind ocean-containing ice caps I don't fully understand the mechanisms behind an ice cap that contains all the water in the oceans. Just to be specific, I have a planet that resembles Mars, i.e. desert at the equator, ice at poles. I want the equator to be hot, but the ice caps to contain the entirety of the oceans. I really lik... (more) |
— | about 4 years ago |
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Possibility of a "hot Mars" Premise/question Correct me if I'm wrong, or if humans have terraformed the planet by the time you're reading this, but Mars is mostly desert-like. It has large ice caps which contain most of its water, and the rest of the planet is basically dry rock and dust. If you want water when you're on Mars,... (more) |
— | about 4 years ago |
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How to determine surface temperatures at specific points I have a planet around 11242 km in diameter. It is very similar to Mars, with most surface water trapped at the poles. For this, I want the polar temperature below 0 C, but the equatorial temperature to be consistently above 50 C; this way, I can have the water stay at the poles and not evaporate or ... (more) |
— | about 4 years ago |
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In what conditions could whales fly? I am wondering if it is possible for whales to fly. I'm considering two different cases. How could we alter earth conditions (thickness, gravity) so that whales could actively fly (without changing anything in the whales)? How could we alter whales (changes in bones, physiology, anatomy, but leavin... (more) |
— | about 4 years ago |
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Cold-and heat-resistant people? My question is: What needs to be added or improved in the human body so that my genetically modified people can fully withstand temperatures of several degrees below zero ( "” 40 ° Celsius) for a long time, and can also survive at temperatures greater than +100° Celsius ? As I understand it, this ... (more) |
— | about 4 years ago |
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Relentless Super marathon? Humans are not the fastest mammals on the planet, but for very long distances (more than 40 kilometers) we can overtake any species living on land. Except some dogs. The best runners on ultra-long distances it is a mark of husky and small-scale, which was brought out for races on sled. Carrying carg... (more) |
— | about 4 years ago |
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Designing a biological drop pod? How would a biological drop pod make it into the atmosphere and land safely? I have a race of aliens that use biological tools instead of technology. Their ships are living beings that can travel through space to find habitable planets. After flying over a planet they find suitable they launch their ... (more) |
— | about 4 years ago |
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How would bacteria go about forming a multicellular organism? I am working on a planet with life composed of prokaryotic cells, like bacteria from earth but which have formed large organisms. What perplexes me is that I haven't found a single example about bacteria forming a larger creature. So I was wondering if there was a way for this to happen? The goal... (more) |
— | about 4 years ago |
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What might a cancer monster be like? A strange concept which I came up with after realizing that vampires, werewolves and zombies are basically created by an infection from a virus. This has lead me to brainstorm how I could make a monster formed by an already existing disease. A monster that would be human or animal and possess attribu... (more) |
— | about 4 years ago |
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How would a Grey Goo robot compute given that it has no fixed form? This is something that confuses me with amorphous characters, monsters, robots etc... How do they compute when their particles don't have a fixed form? They are in a sense modular robots only taken to an extreme in size and number. Such a robot can freely transform, reassemble and other things. Take ... (more) |
— | about 4 years ago |
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Rejoining body parts: How would it work? Reattaching severed limbs is a recurring theme in many monsters, but never has it been explained HOW they reattach their appendages. I doubt the neurons would magically realign and begin to function normally, not to mention the exposure to bacteria and impurities that would risk infection. Whatever t... (more) |
— | over 4 years ago |
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What would be a plausible reason for a prey animal to mimic its own predator? The saying goes "a wolf in sheep's clothing", which is a biblical idiom to refer to someone pretending to be harmless. This got me thinking about if the reverse could also be true. So I came up with a fantasy creature, which is a sheep in wolf's clothing in a very literal sense. The wolf sheep or "... (more) |
— | over 4 years ago |
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Physiology of a heart hijacking parasite? This is a question regarding my little critters that hijack of their victim. By doing so they get direct access to a steady flow of nutrients through the bloodstream and get shelter with optimal temperature and humidity with the added protection of a ribcage. What's terrifying about these little bugs... (more) |
— | over 4 years ago |
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How would a monster decay without leaving as much as a trace? This question is supposed to explain the phenomenon in fiction that I affectionately call the "clean death", where a dead monster disintegrates after being slain. Normally this would be explained by the monster being magical in nature but I am looking for a way to implement this in the actual biology... (more) |
— | over 4 years ago |
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Realistic spinal structure for large headed aliens? The Grey Alien trope almost always features a disproportionately large head, which often comes in unusual shapes to boot. There's nothing wrong with the trope, large brains are cool but what baffles me is how their necks don't snap and how they don't get back pain (at least none that we've seen them ... (more) |
— | over 4 years ago |
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Can a biological system be used to power an android? The purpose of this question is to know whether or not organic tissue can be used to power and android. Compared to a nuclear cell or an ordinary battery this doesn't seem efficient, it needs food, water, oxygen, the right temperature etc... But the reason for this would be to create an infiltration ... (more) |
— | over 4 years ago |
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Would an alien race with diffused organs be viable? The purpose of this question is to get an alien race with a diffused set of organs, which makes any part of their body interchangeable. Why would a species need this? Well for one it might be because they are prone to injury due to the wildlife of their planet. Just like us they make us of tools and ... (more) |
— | over 4 years ago |
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How can a large creature be deceptively fast? So as I was creating a variety of creatures I wondered if speed is exclusive to smaller creatures or if a large organism could move deceptively fast to take prey or predator by surprise. This is assuming the creature has the mass of an elephant (about 2 to 6 tons) but its body plan can be anything as... (more) |
— | over 4 years ago |
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An alien race without the concept of "time" In my narrative I have these aliens that don't experience time, they don't remember and don't predict events, which makes them completely reactionary. This is supposed to make them alien and difficult to understand. They are in a sense a physical metaphor that not everyone experiences the world in th... (more) |
— | over 4 years ago |
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If prey and predator switched places how would this shape the ecosystem? As the tittle says what would the ecosystem look like if predator and prey were to switch places? The cause of this change is either handwavium or a very unlucky sorcerer. The transformation is mainly in diet: prey become carnivores and predators herbivores (omnivores are unaffected so you can leave ... (more) |
— | over 4 years ago |
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What would gravity, breath, and human bodies be like near the heart of the Earth? If humans lived on the inside of the earth's crust, what would happen if they climbed mountains? These mountains would stretch toward the burning center of the Earth. Would gravity get stronger the higher they climbed? Would they feel themselves pulled upward, away from the mountain? Would the air be... (more) |
— | over 4 years ago |
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How would wormholes and teleportation affect the passage of time? Time is not a constant, Albert Einstein proved that much. Time dilation is a difference in the elapsed time measured by two clocks, either due to them having a velocity relative to each other, or by there being a gravitational potential difference between their locations. In the vast universe we can ... (more) |
— | over 4 years ago |
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Could a creature carry its own biome and be self-sustaining? Could a creature carry its own ecosystem around with it? What traits would it need to make this viable? These self-sufficient creatures are native to planet which is for the most part frozen and covered with snow with a thin atmosphere that allows a lot of radiation through. These conditions don't ... (more) |
— | over 4 years ago |
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Would a biological interface be of any use in a computer? Would a computer using biological components as an interface be any good? Would that protect it against hacking? Or provide more complex processing? The way I'm going with this is that computers are at risk of getting hacked when they connect to the network. However as I understand biological compu... (more) |
— | over 4 years ago |
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Could an organism formed from a tumor be viable? What properties and side effects would an organism have if it were formed entirely from cancerous cells? Scientists collected a sample of a tumor from a patient for studies. Once cultivated the cells roughly resembled and embryo. For further studies they decided to grow them in a bioreactor to see t... (more) |
— | over 4 years ago |
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Neodymium magnets as nanoparticles bonded with atmospheric amide to create a magnetic 'air curtain'? Amide bonds are extremely stable and their half-life for hydrolysis in neutral aqueous solution is estimated to be seven years. Amides bind to metal ions through the carbonyl oxygen. Neodymium Magnets Are a type of rare-earth magnet comprised of an alloy of neodymium, iron and boron. They were devi... (more) |
— | over 4 years ago |
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How could a human society survive in areas with average annual temperatures below -30°C? I ask this question because in my fictional world, I want to create extremely cold, populated areas, especially in Northernmost areas, but I noticed that in our real world, regions with less than -30°C average temperature by year are usually uninhabited. But in my fictional world, I would want to ma... (more) |
— | over 4 years ago |
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Modified stem cells as a resuscitation serum after death by cyanide poisoning? In large doses, the body's ability to change cyanide into thiocyanate is overwhelmed. Large doses of cyanide prevent cells from using oxygen and eventually these cells die. The heart, respiratory system and central nervous system are most susceptible to cyanide poisoning. With that stated, I plan on... (more) |
— | over 4 years ago |
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What would the flora and fauna be like on a planet with the most competition? The most violent planet My setting has a lush rainforest planet, which houses some of the most feared animals in the galaxy. The abundance of food would make competition tougher and tougher over millions of years of adaptation. What kind of creatures could survive in such unforgiving conditions? Are there any survival tacti... (more) |
— | over 4 years ago |
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Adaptations for an ice planet? My planet is a frozen world. Roughly the size of earth and in a perpetual ice age. The planet has very cold temperatures at night and during the day its surface becomes very bright. The intense solar radiation means that every night its beautiful landscape is illuminated by auroras. There is some ge... (more) |
— | over 4 years ago |
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Iron-age tools, is there a way to extract heavy metals out of a creature? Assume a location which is heavily polluted with dust of several types of elemental metals (copper, silver, nickel, cobalt etc) or their respective oxides and salts (whatever is stable in humidity and air). It's in the water, in the dirt, basically everywhere. All organisms consume it with their food... (more) |
— | over 4 years ago |
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Adapting to a sonic world A planet much like Earth orbits a star much like the Sun, but with one difference: the energy from the star is magically transformed into sound within the planet's atmosphere. There is no longer starlight, only starsound. Every point on the planet is still bathed with an equivalent amount of energy, ... (more) |
— | over 4 years ago |
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Is it realistic to have a livable planet with a quarter the size of Earth, but with the same gravity? So in theory, I would want this planet to have the same everything as earth besides the radius (and anything that affects how radius plays into gravity). I know the density of this Planet X would have to be quite high based on some quick number crunches. But I'm not sure how realistic this would be. ... (more) |
— | over 4 years ago |
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How many people would you need to pull a whale over cobblestone streets? A whale, lets say a humpback (40 tons) has to be pulled about 250 m from the port to the town square. The road is classic cobblestone. People put hooks into the whale meat with ropes attached and pull, dragging the whale body. How many would I need? I calculated the rough number of people to lift 1... (more) |
— | over 4 years ago |
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Why is transplanting a specific intact brain impossible if it is generally possible? In the near future Science Fiction novel I am writing, the personality and memory of a person are transferred to an artificial brain after a fatal accident, creating an artificial intelligence with the personality and memories of an actual person. Reading out the personality and memories of a perso... (more) |
— | over 4 years ago |
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Deadly virus going extinct - "grey goo" a solution? With the evolving global warming and thawing of permafrost, an ancient deadly virus begins to spread from Siberia across Eurasia, affecting domestic animals first and mutating quickly onto the rest of the fauna. First symptoms were found in people too and with insects like bees nearing to extinction,... (more) |
— | almost 5 years ago |
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If a planet has 3 moons, is it possible to have triple Full/New Moons at once? In the story I created, the Kingdom of Oneirou has 3 Moons--Artemis, Rahu, and Zorya--all of which have their own independent lunar cycles. However, it's officially stated as early as Chapter 2 or 3 that, once a year [each], all 3 Moons' phases are synchronized to Full Moon and New Moon. Let's say,... (more) |
— | about 5 years ago |
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What items from the Roman-age tech-level could be used to deter all creatures from entering a small area? Please assume the following: There is a item on the ground and I want nothing but bare earth touching it. I cannot move the item myself. The item is impervious to fire. I cannot afford to guard the place 24/7. But I can come back from time to time (maybe even daily) to check. EDIT: Dimensions: T... (more) |
— | about 5 years ago |
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Can a planet's rings be so thick that someone inside them can't see out? For a SF story I'm wondering how thick a planet's rings can be? When viewed from the inside, can the ring material be so dense that visibility would only be a couple of meters? What would it take to form a ring this thick, moon collisions, etc? (more) |
— | over 5 years ago |