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Sunday 22 October 2017

Medical Tissue Regeneration



This is very SciFi!
A device which stimulates the body to grow new blood vessels or even organs. https://wexnermedical.osu.edu/mediaroom/pressreleaselisting/researchers-develop-regenerative-medicine-breakthrough 

It is interesting that with approaches like this and CRISPR, we are not 'writing new low level biological code', rather we are 'calling high level functions' which already exist.

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Friday 13 October 2017

Is Physics Different Outside the Matrix...


 My curiosity was piqued by the title of this article:
"We don't live in a simulation, or computing works differently outside the Matrix."

https://boingboing.net/2017/10/03/elon-is-wrong.html
http://advances.sciencemag.org/content/3/9/e1701758

But why wouldn't physics be different outside the simulation?

I suppose one reason is that for a grandfather simulation—where the simulation's owners try to learn more about their pre-singularity dark ages by letting others (e.g. us) live through them—it would make sense for the rules inside and outside to be the same.

But generally a simulation must consume less resources than the universe it is running within, and corners must therefore be cut. A program running on a Minecraft Redstone Turing Machine (https://www.youtube.com/watch?v=1X21HQphy6I) will clearly have less resources available than assembler running on the bare metal of a processor. Even ignoring the appalling speed at which it will run, lookup tables and special instructions will make some calculations scale better than others in the simulation…

We already know that the 'substrate' our universe runs on, is wildly different from the 'classical world' we experience. Some physics like entanglement seems to require access to 'super user' functions which break our Universe's laws, e.g. instantaneous communication of state changes between entangled particles. Quantum computation is another example of magic, able to solve 'classically' impossible equations in the blink of an eye. 

Even if our universe is not a synthetic simulation created for amusement or research, theories like the Holographic Universe suggest reality is far less prosaic than we imagined up until now.


Quantum Computation:

https://www.youtube.com/watch?v=JhHMJCUmq28

https://www.youtube.com/watch?v=wgCuKTN8sX0


Holographic Universe:

https://www.youtube.com/watch?v=6bwLtlA9eDM

https://phys.org/news/2017-01-reveals-substantial-evidence-holographic-universe.html

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Cyberhavior