On Sunday, January 6, 2019 at 10:10:36 AM UTC-6, Jason 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) > > > So if we simulate some other universe, we can describe and relate it to > our own physical universe in similar terms of information content, > computational complexity, dimensionality, discrete units, etc. but many > things seem to have no meaning at all: time, distance, size. > > Do these reflect limits of simulation, or are they limits that apply to > our own universe itself? e.g., if everything in this universe was made > 100X larger, and all forces similarly scaled, would we notice? Perhaps > incomparable properties are things that are variant (and illusory) in an > objective sense. > > A final question, are they truly "causally disconnected" given we can > simulate them? E.g. if we can use computers to temporarily compel matter in > our universe to behave like things in that simulated universe, then in some > sense isn't that a causal interaction? What things can travel through such > portals of simulation beyond information? > > Jason > > P.S. > > It is interesting that when we consider mathematical/platonic objects, we > likewise face the same limits in terms of being able to understand them. > e.g., we can't point to the Mandlebrot set, nor compare its size in terms > of physical units. >
This is the idea of the *matter compiler,* first in SF, and now in NSF research projects. - pt -- 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.
