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Posts by Matthew‭

54 posts
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Q&A If humans were transplanted to a different Earth-like world that they didn't evolve on, how would they deduce how they came about?

(Regardless of what you believe in this Earth...) You already answered (part of) your question; they'll believe in Intelligent Design¹. Genuine science does not a priori reject extraordinary expl...

posted 5y ago by Matthew‭

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Rigorous Science Lagrange systems: What is the mass range for a gas giant if I want to place a earth-like planet on L4 and L5

Both this site and Wikipedia assert that L4 and L5 are stable for a mass up to about 25 times the mass of the secondary. Since plain old Jupiter is about 318 Earth-masses. Since a) 318 is more than...

posted 5y ago by Matthew‭

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Rigorous Science Is the Hammer's Slammers Powergun feasible?

It's pure handwavium... but it's not completely absurd. As noted in Christopher's answer, powerguns work via a hand-wavium reaction that generates plasma from a specially formed matrix of "stuff" ...

posted 5y ago by Matthew‭

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Q&A Can an atmosphere be thicker at higher altitudes?

In general, I think the answer is "no"; buoyancy simply doesn't work that way, and you'd need to somehow circumvent buoyancy. What might be plausible is to have a low spot in your terrain that is ...

posted 5y ago by Matthew‭

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Q&A How much energy do plants produce?

According to this answer to a different question: On Earth, a large tree on average collects maybe 200 calories of energy in a day. (Thanks, Dan! This also gives the same answer, but could be...

posted 5y ago by Matthew‭  ·  last activity 5y ago by Matthew‭

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Q&A "Dragon amongst the sheep" How could a dragon avoid other animals registering him as a threat?

How can a dragon prevent the animals from registering him as a threat? Don't act threatening. Animals aren't stupid, and running away takes energy. I believe many/most prey animals will allow...

posted 5y ago by Matthew‭

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Q&A Way to prove you are human when the Turing test is not sufficient

Y'all are making this too hard. The OP said the AI's aren't androids. That means they have physical limitations, even if they're tapped into most of the data channels. Simply don't give the AI's ...

posted 5y ago by Matthew‭

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Q&A Is my river map even remotely realistic?

This seems like a great time to check out https://azgaar.github.io/Fantasy-Map-Generator/. If you can turn your base map (coastlines) into a digital image, you can upload it there, start painting i...

posted 5y ago by Matthew‭

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Q&A How does this dragon's self-defense mechanism not burn the user?

Monstrous Nightmare, anyone? Do they have to have fur? The Monstrous Nightmare exudes a flammable gel over its body, which it can ignite by a biologically-produced spark. Presumably, its scales a...

posted 5y ago by Matthew‭

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Q&A Optimal posture for hexapodal dragon while flying?

I wonder what the optimal posture be for these dragons when flying/gliding? Superman. No, seriously. I'm just not seeing any practical way those forelimbs can be tucked away against those (ne...

posted 5y ago by Matthew‭

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Q&A How many pillows would you need to survive a fall from a church tower?

Without having the information to crunch numbers on this... I'm going to call it plausible, but only if the commoners have enough knowledge of physics. What you really need is to absorb energy slo...

posted 5y ago by Matthew‭

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Q&A Would a biological interface be of any use in a computer?

No. The best protection is air-gapping; don't allow untrusted information into the system in the first place. The next best protection is to thoroughly vet incoming information. This may take the ...

posted 5y ago by Matthew‭

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Q&A Artificial lighting for a closed O'Neill cylinder

First off... I don't think I buy the "but the power!" argument. Aside from atmospheric absorption (which isn't that significant), photons are going to keep until they hit something. Thus, as long a...

posted 5y ago by Matthew‭

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Q&A Everyday tasks on a space ship

You should read Ringo's Looking Glass series, which comes fairly close to dealing with exactly this question. The short answer is "see Nathaniel's answer"... but playing around with this will make ...

posted 6y ago by Matthew‭

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Q&A How could a skyhook stay in orbit with no human involvement for thousands of years

They can "swim" If they're "dragging" in atmo, and they have some power source (solar would be fairly trivial), perhaps they can have some sort of propulsion system that leverages that for station...

posted 5y ago by Matthew‭

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Q&A What effect would it have on the human psyche to be able to observe, but not interact, with other humans for an extended length of time?

I imagine your character would become incredibly frustrated, if not go insane outright. I would try to imagine how you would feel if you were unable to speak and had your hands tied behind your bac...

posted 5y ago by Matthew‭

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Q&A Why would Earth be long-term unsuitable for an advanced alien species that's already colonized it?

"It's the smell!" -- Smith I think the easiest answer is that there is something in Earth's biology that disagrees with them... something that can be "managed" with continuous medical interventio...

posted 5y ago by Matthew‭

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Q&A Freedom from the tyranny of gravity

This is a little outlandish (and, for the record, no I am not actually a pastafarian), but might give you ideas regardless... What is this "gravity" you speak of? Everyone knows there is no such ...

posted 5y ago by Matthew‭

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Q&A Could a dichromatic animal see red?

[Would a dichromat] necessarily not be able to detect large light wavelengths (red)? I would much rather them not being able to detect small (blue) instead, and have a similar vision to tritanop...

posted 5y ago by Matthew‭  ·  last activity 5y ago by Matthew‭

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Q&A How much energy do plants produce?

Consider a magic system that follows the Eragon model; "doing it by magic takes just as much (biological) energy as doing it the mundane way". In Eragon, magical energy can be drawn from other liv...

4 answers  ·  posted 5y ago by Matthew‭  ·  last activity 5y ago by Matthew‭

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Q&A My mysterious "ruins" wander around and change on their own, what'd be a rational way for them to do that?

This is roughly the same as Bald Bear's (first) answer, but more fleshed out... The "ruins" are built (and removed) by "cloaked" repair mechs of unknown origin. These mechs have some form of proba...

posted 5y ago by Matthew‭

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Q&A What disaster could wipe out civilisation worldwide, but allow for immediate rebuilding? What would be the side effects?

I can think of a couple options: Gray Goo An unstoppable swarm of nanites, or maybe even larger (e.g. insect-sized) creatures that destroy all non-bio-associated metal, would probably do the tric...

posted 5y ago by Matthew‭

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Q&A Number of Fingers for a Math Oriented Race

Following up on Christian's comment about seven day weeks... your aliens could use any base you want, for the same reason weeks have seven days: because their deity/religion said to do that. (This ...

posted 5y ago by Matthew‭  ·  last activity 5y ago by Matthew‭

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Q&A If quadruped mammals evolve to become bipedal will their breast or nipple change position?

I think SealBoi hit the right note, in that the question you should be asking is "how do my critters nurse their young?". If they always lay down to let their babies suckle, there is no reason for ...

posted 5y ago by Matthew‭

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Q&A Justification of physical currency in an interstellar civilization?

Global Usability However advanced your average tech level, you probably still have a few people that can't afford "” or for whatever reason, don't use "” the necessary equipment to deal in digital...

posted 5y ago by Matthew‭

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