A continuation of reposting from another forum…
Originally Posted by Secret
The distinction of Past and Future From here Feynman said the irreversibility of time is due to the irregular motion of a huge amount of particles becoming more disordered over time (e.g.a system of many particles in a ink-water mixture, it is less likely for the ink particles to separate from the water particles (or become more ordered) than remain mixed (disordered))In the end he also mentioned that for a closed system, things tend to go to states where the availability of energy decreases/become more distributed (i.e. entropy increases). But what about the formation of memory, as entropy seemed to be decreasing? Does "no memory" has more energy than "memory"? Or is formation of memory considered a open system?en.wikipedia.org/wiki/Arrow_of_timeIn reference to my 2nd block of text, the perceptual/psychological arrow of time is what bugs me most, as it seemed to go in a direction opposite to entropyP.S. Any more insights to this topic?N.B. Original title (blocked by error 500): The difference of past, present and future ”
There is a next (in a huge number of others) attempt to understand – what is the time? And again the result is without something understandable. Such a situation is quite natural – the notion "time" is fundamental in the World’s picture and as any other fundamental can be – at least in certain extent – understand only in framework of the informational conception
Any other way – what all philosophical history shows - leads only to appearance of next non-tested and non-provable suggestions that "explain" some separate sides of this notion.
In the informational conception (http://arxiv.org/abs/1004.3712
, more specific http://arxiv.org/abs/1110.0003
) Time has two main features:
(1) - Time is a innate component of logic
– it is a rule
and states (or governs) that the cause is always earlier then effect. An example – in the fundamental Set "Information" any information about changes in any Set’s elements appears in every other elements immediately, "the time interval" is infinitesimal. But it isn’t equal to zero exactly, the cause-effect events "change – reception of information in other element" cannot be simultaneous; and
(2) – time (in e.g., physics) is a parameter that defines/ characterizes/ allows to compare for given subset of the Set – including for Matter of our Universe - what time interval is necessary for some process to pass. That is a next problem – why in Matter the time intervals aren’t infinitesimal, but that is non-principal. On a first stage is enough to know that as the experimental fact.
From the conception and experiment directly follows that Matter is some well organized simple dynamical logical system, something as large computer consisting of huge number rather independent automata, united, though, by universal informational bond, i.e. by gravity.
This computer works having highly stable "operating rate" (seems having tact be equal to Planck time) and was started in some time (possibly "absolutely long time ago") after it got enough energy to create and move some number of particles (automata).
Just the stability of the tact's period and "fundamental gate’s" length lead to uniformity of the time’s and the space’s scales.
The execution of the computer’s program code is in reality "the time flow". Why the direction of the flow is the same as the entropy evolution – that is again some next, important, but non-principal problem.
The realization of the rule "Time" in a specific Set's subset "Matter" is specific also. It is simultaneously "coordinate time" and "absolute time" – tough both times are, of course, absolute and don’t depend on material objects
The coordinate time is the coordinate in 4-D Euclidian spacetime that is rather similar to the space coordinates – a particle moves in this time as in space.
The absolute time is a manifestation of the Time as the rule also – to step, e.g., in space is necessary to spend (to step) in the time, at that the steps in coordinate and absolute times are the same.
So all Matter objects, though always uninterruptedly moving in coordinate spacetime with the speed of light in different specific directions
, are always in one absolute time moment; the film "Matter’s evolution" runs shot by shot; when every next shot is "Matter now", correspondingly former shots are "Matter in past" and next shots are "Matter in future".
At that, when a material object is in the absolute spacetime at rest, it moves in the coordinate time with the speed of light. If after some space impact it becomes to move in the space also, it must move in coordinate time slower then C
– and, if the object is a clock, then clock’s pointer becomes to move slower also – showing so "the time dilation". Again – nothing at that happens with either the space or the time; none of them "are doomed to fade away into mere shadows
" as that is stated in the Einstein-Minkowsky special relativity theory.
More – see the arXiv links above.