0 Members and 1 Guest are viewing this topic.
quote:Originally posted by DoctorBeaveranother-someone - I'm not sure another universe would be required to hold the information. If it was necessary to map every single particle, that would be the case. But would that be necessary? Very complex systems can be modelled already without needing to store every minute detail. Take the met office computer, for instance. It doesn't need to store information on every sub-atomic particle in the atmosphere to be able to predict with a fair degree of accuracy what the weather will be like for the next few days. OK, it can't say the edge of a rainstorm will pass over 93 Acacia Avenue, S****horpe; but a close approximation is often all that's required. Similarly, we can model the evolution of a star without a computer the size of a star.
quote:Originally posted by DoctorBeaveranother_someone - I agree about the accuracy reducing as the forecasts look further into the future. But the point I was making is still valid. You don't need to map every single particle to predict what will happen. If someone invented a new alloy, you wouldn't need a computer with the capacity of all the atoms in a bar of it to predict how it will behave in certain conditions.
quote:Originally posted by DoctorBeaverI take your point, but is that level of accuracy needed to predict the future? I suppose it depends on the scale at which you want to predict. To predict the behaviour of a system, you only need to model the pertinent components; but, yes, if you want to predict the behaviour of every single particle within that system, you would need to map every single particle.I would contend that to all intents & purposes the behaviour of each & every particle would be immaterial in the overall scheme of things. If, all things being equal, the same initial conditions would result in the same outcome, would it really be necessary to say that life will appear on the next Earth exactly 4,532,684.598623754 years (or whatever) after its creation? Would it really matter if it was rounded to the nearest 100,000 years or so? The prediction would still be valid.
quote:Originally posted by neilepAre you absolutely sure with no shadow of a doubt that by using the exact same starting conditions that an identical universe will manifest ?I just hesitate to agree that all the consequences of this simulated identical universe will also by consequence follow the exact same path as ours.....I am sure there are some parameters somewhere that are open to differing repercussions despite the original premise.Absolutely fascinating idea though....I think it's a great dream idea !