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For questions that ask if a given concept is consistent, or being used consistently, in the context of the referenced world rules. Answers should say yes or no, with supporting info. This tag should not be used with the science-based, hard-science, or science-fiction tags. Comparisons to the real world should use the science-based tag. This tag may not be used alone. This tag may not be used with the science-fiction, science-based, or hard-science tags.

3 votes

Coastal Ice Age Civilization- Dealing With Sea Level Changes

Look to New Orleans for a Reference The city sits on the mouth of the Mississippi River feeding into the Gulf of Mexico. Only the old city is above sea level. The parts of the city below sea level for …
James McLellan's user avatar
18 votes
Accepted

How can someone that has lived for hundreds of years avoid suspicion in the modern world?

Here are some ideas : Certain identity documents (like social security cards or driver's licenses) aren't essential to get by. If you are willing to accept the low-paying work, you will be able to f …
James McLellan's user avatar
0 votes
Accepted

Messenger Line for Interstellar Travel

No Clones There would have to be some sort of no-cloning aspect to the technology (entanglement?). Otherwise, you'd be able to create an army of the same individual at the target site. Creating a cl …
James McLellan's user avatar
2 votes

Will these transcendent beings be friendly, chatty social magpies?

You might want to reconsider jealousy and rage. Anything that can make plans can have those plans frustrated. The more invested (emotionally or in time/wealth) the more frustrating a disturbed plan ca …
James McLellan's user avatar
20 votes

Are underground shelters defensible?

You can vent into a cave system. Particularly doable in areas with very large cave systems, such as Kentucky and parts of Texas. Many cave systems are not fully mapped, so if your survivalists are spe …
James McLellan's user avatar
-1 votes

Could geniuses of the past catch up in a few months?

I think so The Progress of Knowledge is Slow Quaternions, invented by Hamilton in 1843, is still cutting edge math for graphics. Eulers matrix transformations are still used in orbital mechanics. …
James McLellan's user avatar
4 votes
Accepted

How to best use a cloning machine to get rich and powerful

You Can Do It! Go up into the Klondikes, or Peru, or any other place known to be rich in some natural resource. Preferably somewhere remote enough where you can work without being watched too closely …
James McLellan's user avatar
4 votes

Can a successful economy exist without renting stuff?

Let's try working through this. By the way, this was codified in Deuteronomy by Moses and supposedly practiced by pre-monarchy Israel in antiquity, but the specifics on how this worked out aren't well …
James McLellan's user avatar
5 votes

distances between communities/cultures in fantasy world, approximate to 12th - 13th century

Typically there are small villages about every 1 hour (3 to 4 miles of travel). Assuming travel by road and on foot, your adventurer would cover 3.5 mph x 8 hours per day of travel x 5 days = 180 mile …
James McLellan's user avatar
4 votes
Accepted

How protective is this monomolecular wire ‘force field’?

The equations you are looking for are : Centripedal Force -- ${m v^2}\over{r}$ Where $m$ is the mass of the line, equal to ($\rho_{line} \pi r_{line}^2 l$), and $r$ is the radius of the rotation, fro …
James McLellan's user avatar
11 votes
9 answers
3k views

Feasibility of super-fast airlock using Utility Fog

I've been trying to imagine a convenient future airlock for people on planets with little atmosphere (which is most of the bodies in the inner and outer solar system). It feels like waiting 15-to-30 m …
James McLellan's user avatar
9 votes

Ownership of a house if no owner can be found

It will be claimed by the government for unpaid property taxes Property taxes in Germany are assessed annually (https://en.m.wikipedia.org/wiki/Taxation_in_Germany). Depending on the charity of whoeve …
James McLellan's user avatar
2 votes

Invading a universe made of absolutely nothing

Is it truly empty space? Without a Higgs field and it's non zero vacuum potential, your particles would lose their mass. Gravity would cease to exist. Without mass, balance of attractive forces, repul …
James McLellan's user avatar
6 votes

Using our current scientific theories, is it possible to develop better siege equipment than...

Production techniques for hydrogen were discovered in 1671. This opens up all sorts of options for flying over the walls. You could combine with paratroopers and airdrop ideas, so that the siege platf …
James McLellan's user avatar
2 votes

Any benefits or problems on using a national I.D chip implant rather than an I.D card in a h...

Popularly, identity verification has three dimensions - what you possess (a card, smartphone, or chip), what you are (fingerprints, retinal scans, facial biometrics, DNA, voice print, behavior), a …
James McLellan's user avatar

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