Dear John,
I enjoy the word Tomcentric. Before the allegedly relative Poincaré desynchronization, there was no doubt: Fortunately, the Tomcentric time is ubiquitously valid.
J:
What is it that we measure? Changes of configuration, preferably those with regularity.
E:
Measures like temporal or spatial distance are means of comparison that are based on recognizable discrete features.
(E:)
Don't causing influences precede any effect?
J:
Yes, but there is no way to calculate how they will interact prior to the event, since information can be coming from opposite directions at the speed of light, so knowing all potential input requires that God like "objective perspective."
E:
Good point.
(E:)
Isn't existence independent from perception?
J:
Perception is a small, subjective part of existence. The problem though, is that there is no such thing as an objective perspective of existence, because "objective perspective" is an oxymoron.
E:
I did not use the expression objective perspective but I consider objective existence the only reasonable guess and always confirmed without exception.
(E:)
What about the role of energy, look at the harmonic oscillator in phase plane. Energy is in this admittedly idealized case expressed as constant radius while the parameter t proceeds along a circular path.
J:
We can only know that subjective part our minds register. The problem with knowledge is the dichotomy of specialization vs, generalization. As an electrical engineer, you have quite a lot of specialized knowledge about electrical properties, but someone who spend their life as a painter would have a completely different, yet equally valid understanding of the properties of light.
E:
I am claiming to be closer to logically foundational questions than an artist. He can create the illusion of getting younger. I am forced to judge reasonably.
(E:)
I disagree: Even highly unlikely events may happen. Probability is only reliable with many trials.
J:
The point is that once a particular event has actually occurred, the odds of it having happened are 100%. Not that there are not many subjective arguments as to what might have happened, but all events that are in the past have that 100% probability.
E:
Opponents of a clear distinction between past and future like Georgina argue, the past, while 100% decided in the present moment, gets increasingly uncertain, and they do not look at reality but on our possibility to retrace it.
(E:)
Often it is even after the event impossible to reconstruct all influences.
J:
True. That is why the idea that information isn't destroyed is nonsense.
E:
I meant it is often impossible to observe and analyze all influences.
J:
As I said earlier, the past is chewed up to feed the future. Energy is conserved, so old information is destroyed in the process of creating new information.
E:
Sounds as if we should burn all old books and destroy all fossils.
(E:)
Such anticipation could at best be true within a closed system. In reality, it is reasonable to reject fatalism and to consider the future not yet existing.
J:
In a closed system, there would presumably be a way to know all input.
E:
Yes.
J:
It is because the light cone of any event is still open prior to its occurrence.
E:
I dislike attributing mental constructs to reality. What is "the" light cone of any event? You meant the cone of future in the sense of exclusding impossible processes.
E:
Nature does not calculate probabilities. Any cause always precedes its past. I understand your fallacy.
J:
Maybe "calculate" was not the right term, as it implies intent. The arrow of time goes from what comes first, to what comes second. Tomorrow is the 7th of March. Shortly that date will be yesterday. So the arrow of time for the actual events is future to past. Now your point is that prior events precede succeeding ones, therefore the past is cause of the future. The fact is that it is never past, or future, but only the present. The same energy which manifested as yesterday, is currently manifesting today and will eventually manifest tomorrow. That energy is never in the future, or in the past, its existence is what is the present. As that energy moves around, it creates these configurations, Past configurations dissolve into the present configuration, which is dissolving into the next. Neither past or future physically exist because the energy moved on. Now until a particular event occurs, it is a probability, ie, in the future. The probability of an event precedes its actual occurrence. The future is the probabilities and the past is the effect of those probabilities being resolved.
E:
Here you are horribly wrong. Effects can only be ascribed to causes, not to probabilities. Consider a clock. Isn't is nonsensical to ask which energy is manifesting yesterday, today, and tomorrow? "Neither past or future physically exist". In what sense do you mean does the present time exist? You means only configurations exist. In that I agree. Nonetheless I see existing while of course declining evidence of what happened but no future fossils.
(E:)
Isn't this illusory? I see physics obliged to separate between (b) where future time is just a void placeholder and (a) where future does simply not yet exist.
Up to now, physics operates with closed modeling systems instead of reality. For models, the future can indeed be calculated.
J:
That's why they end up with multiworlds. Our brains physically exist and thus are always present. Our minds are a record of events, as they recede into the past. If you view time as the probabilities collapsing and not as some fundamental dimension along which events exist, which splays out on encountering the future, then how (A) is separated from (B) makes sense.
E:
I share and appreciate this insight.
(E:)
Well, preparation is possible. However it does not shift reality.
J:
Preparation is action, which does shift reality, though not always as intended.
E:
With shift of reality I meant shift of time scale in reality. You will agree that this is not feasible.
(E:)
What about spacetime, I see its proponents mingling (a) and (b).
J:
They, along with the quantum theorists, are trying to reconcile how the effect of time, ie. the sequential series of events, is fundamental, without considering that the process of time, the changing configuration of what is, is the inverse. Much as we see the sun moving across the sky and spent millennia trying to figure out how, before realizing it was the ground we stand on that was moving the other direction.
E:
Despite your adherence to presentism, you seem to be among the very few who can agree with a considerable part of my essay. I consider rewarding it.
Best regards,
Eckard