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For the cells to act exactly as described would require cooperation between different metastasising cell lines, both during infection and when growing structures in the new host. That implies a ki...
Short, easy-to-read gene tags. Since all modifications are reliably policed, you can require that every modification includes a short, non-coding DNA sequence containing the recipient's legal iden...
One obvious answer is RFID tag microchip implants, for example attached to the ear at birth, at the same time as someone is given their personal credentials. The body can change but the chip will r...
Quantum Computers are considered a more powerful type of computer than so called 'classical' computers. While a typical classical computer could be considered as a black box that can solve Polynomi...
why would such a species have retained their ability to hear Because they still go outside to hunt, gather food and materials, and to interact with others of their species that live in other caves...
In a story that I'm writing, there is a giant waterfall which flows down a cliff face. The waterfall is extraordinarily large, and the torrents of water which flow over the side are deafening. Beh...
Yeah sure photoproduction can dominate, no problem. A neutron's proper lifetime is a fixed property of the particle, but the mean free path length that a neutron can travel without interacting wit...
Stay safe the same way you've been doing it for the past 9 months: Stay home and only jump through time when you really need to. When you do time travel, try to keep your distance from other pe...
No way would I buy that thing. ...ok so the details really do depend on exactly what it does. 1% of my revenue for 10 gizmos? And I'm the CEO of Intel? Intel made between 10 and 100 billion dollar...
This can't be answered because it depends greatly on the details of some drug/process/whatever that caused them to stop growing You made this up. Only you can say what the long term effects are....
Let's say I have a bunch of pre-pubescent children (circa 8-12 years old). Let's also say I subjected them to some drug/process/whatever that caused them to stop growing. In particular: Whatever...
Since manipulation of the brain is prohibited and illegal modifications are assumed to be reliably caught, the obvious way to check someone's identity with biometry would be by checking their brain...
Armies need more than just soldiers that fight. Herbivores can easily be more efficient at these other tasks because they don't carry the extra expense of the fighting apparatus (claws, sharp teet...
How does this time traveler handle the risks of being infected with a contagious idea then spreading it to his fellow humans on return to his own time? He doesn't. Coming back with a revolutionar...
Building on the universe established in this question, what happens to identity verification when someone's physical appearance and genetic code are modifiable at any time? Review of universe rule...
My friends and I are building a world with a 50 mile high volcano on it. The mountain is the result of some bored god deciding to play a joke on everyone. Or, some other god got angry and decided ...
Time travel works...just invented, by you. The tests prove it! After many conversations and significant planning, your epidemiologist significant other has approved your plans for time travel, for...
A global epidemic of H1Z2 virus has rendered 95% of the population into zombies. The zombies have lost most of their frontal and temporal lobes so the following capabilities are either severely de...
The Demonstration You're a rich, successful CEO/capitalist working in the electronics business. Your R&D division is exceptional and routinely fabs state of the art processors at bleeding edg...
This is a multi-species animal army with predators of all shapes and sixes, foxes, lions, bears, tigers, leopards, wolves, lynx, eagles, falcons and so on. The herbivores have been excluded from t...
In my story, I have a small extended family of 30 to 40 individuals ranging in age from 0 to 50 who are on the run from Chinese and Japanese forces in 1400AD. No place in Asia is safe for them. By...
Satellites will still be visible. A couple of characteristics make human satellites easy to see. They are fast and bright. Slow objects are difficult to pick out from the background star field. ...
After an age of highly developed technology, including many different satellites in various Earth orbits, humanity loses the technology needed to control those satellites. After many centuries, how...
I think a reasonable assumption is that you don't want to accumulate entropy from the Dyson sphere. That is, the entropy you get from the star must not be lower than the entropy you send to outer s...
It's very unlikely that it's impossible, but you may want to remove "human" from the title, if you want to make it plausible. There are many large animals that are 15-18 feet tall and they go on to...
