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 [email protected] 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
