Eternal return (also known as "
eternal recurrence") is a concept which posits that the
universe has been recurring, and will continue to recur in the exact same self-similar form an number of
incomprehensible and unfathomable number of times. The concept has roots in ancient Egypt, and was subsequently taken up by the
Pythagoreans and
Stoics. With the decline of
antiquity and the spread of Christianity, the concept fell into disuse, though Friedrich Nietzsche briefly resurrected it.
In addition, the philosophical concept of eternal recurrence was addressed by Arthur Schopenhaeur. It is a purely
physical concept, involving no "reincarnation" but the return of beings in the same bodies. Time is viewed as being not
linear but
cyclical.
The basic premise is that the
universe is limited in extent and contains a finite amount of
matter, while
time is viewed as being infinite. The universe has no starting or ending
state, while the matter comprising it is constantly changing its state. The number of possible changes is finite, and so sooner or later the same state will recur.
Physicists such as
Stephen Hawking and
J. Richard Gott have proposed models by which the (or a) universe could undergo
time travel, provided the balance between mass and energy created the appropriate cosmological geometry. More philosophical concepts from physics, such as Hawking's "
arrow of time," for example, discuss cosmology as proceeding up to a certain point, whereafter it undergoes a time reversal (which, as a consequence of
T-symmetry, is thought to bring about a chaotic state due to thermodynamic
entropy).
The
Oscillatory universe model in physics could be provided as an example of how the universe cycles through the same events infinitely.
It happened to me one night.i had a dream.the dream was i won a football match and i scored five goals in it.i woke up and thought that this dream had no sense.in the next two weeks the dream came true,with the exact way it had happened in the dream.that is,the way i scored the goals i could see in the dream.i scored the goals the way it came in the dream.I think i was predicting the future.i asked my friends,they said they had dreams where they saw the future.only small incidents,like this one.they did not see incidents like 9/11.HAVE YOU HAD SIMILAR EXPERIENCES?i think all the events of the universe had already happened once and it is repeating.this has nothing to do with reincarnation.:confused:
Nietzsche calls the idea "horrifying and paralyzing," and says that its burden is the "heaviest weight" imaginable. The wish for the eternal return of all events would mark the ultimate affirmation of life:[INDENT] What, if some day or night a demon were to steal after you into your loneliest loneliness and say to you: 'This life as you now live it and have lived it, you will have to live once more and innumerable times more' ... Would you not throw yourself down and gnash your teeth and curse the demon who spoke thus? Or have you once experienced a tremendous moment when you would have answered him: 'You are a god and never have I heard anything more divine.'
- The Gay Science:mad:
[/INDENT]
Walter Kaufmann suggests that Nietzsche may have encountered this idea in the works of
Heinrich Heine, who once wrote:[INDENT] [T]ime is infinite, but the things in time, the concrete bodies, are finite. They may indeed disperse into the smallest particles; but these particles, the atoms, have their determinate numbers, and the numbers of the configurations which, all of themselves, are formed out of them is also determinate. Now, however long a time may pass, according to the eternal laws governing the combinations of this eternal play of repetition, all configurations which have previously existed on this earth must yet meet, attract, repulse, kiss, and corrupt each other again...
Proofs against eternal return
Nietzsche scholar Walter Kaufmann has described a proof originally put forward by
Georg Simmel, which refutes the claim that a finite number of states must repeat within an infinite amount of time:[INDENT] Even if there were exceedingly few things in a finite space in an infinite time, they would not have to repeat in the same configurations. Suppose there were three wheels of equal size, rotating on the same axis, one point marked on the circumference of each wheel, and these three points lined up in one straight line. If the second wheel rotated twice as fast as the first, and if the speed of the third wheel was 1/π of the speed of the first, the initial line-up would never recur.
[/INDENT]It can be argued that this proof is flawed. Even if a system contains an infinite number of states as considered from the perspective of
classical mechanics, applying
quantum mechanics reveals that the system will repeat after an arbitrarily long time due to
discretizaton(Classical mechanics is only a rough approximation to the physics that goes on at the atomic scale.) However, not all quantum-mechanical operators have
discrete spectra.
:confused: [/INDENT]