On Sun, Jan 06, 2019 at 10:10:23AM -0600, Jason Resch wrote:
> I am trying to make a list of what properties are comparable between two
> universes and which properties are incomparable. I think this has applications
> regarding what knowledge can be extracted via simulation of (from one's POV)
> other abstract realities and worlds (which may be actual from someone else's
> point of view).
> So far this is what I have, but would appreciate other's insights/corrections:
> Incomparable properties:
>   • Sizes (e.g., how big is something in another universe, is a galaxy in that
>     universe bigger or smaller than a planet in our universe?)
>   • Distances (what possible meaning could a meter have in that other
>     universe?)
>   • Strength of forces (we could say how particles are affected by these 
> forces
>     in their universe, but not how they would translate if applied to our own)
>   • Time (how long it takes for anything to happen in that other universe)
>   • Age (when it began, how long the universe has existed)
>   • Speeds (given neither distance nor time is comparable)
>   • Present (what the present time is in the other universe)
>   • Position (it has no relative position, or location relative to our own
>     universe)
> Comparable properties:
>   • Information content (how many bits are needed to describe state)
>   • Computational complexity (how many operations need to be computed to
>     advance)
>   • Dimensionality of its objects (e.g. spacetime, strings, etc.)
>   • Entropy
>   • Plankian/discrete units (e.g. in terms of smallest physically meaningful
>     units)
> Unsure:
>   • Mass? (given forces are not comparable, but also related to energy)
>   • Energy (given its relation to both entropy and mass)

I would stick with dimensionless constants - eg alpha may vary between
universes. Information is a good example of a dimensionless value too.


Dr Russell Standish                    Phone 0425 253119 (mobile)
Principal, High Performance Coders
Visiting Senior Research Fellow        hpco...@hpcoders.com.au
Economics, Kingston University         http://www.hpcoders.com.au

You received this message because you are subscribed to the Google Groups 
"Everything List" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to everything-list+unsubscr...@googlegroups.com.
To post to this group, send email to everything-list@googlegroups.com.
Visit this group at https://groups.google.com/group/everything-list.
For more options, visit https://groups.google.com/d/optout.

Reply via email to