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Poincare recurrence time is a very complex concept in mathematics and physics, but it is somewhat easy to understand in its basic form. It says that if given enough time, anything is possible. The Poincare recurrence time is the estimated time frame after which the universe will repeat itself in a state approximately as it is today, due to random fluctuations of quantum events. In simple language, 'History will repeat itself', that is, almost infinite time from now, I will be writing this on my laptop which you will read when it is posted. I say infinite time because it will take 10^10^10^10^10^1.1 years for this to happen. How long it is cannot be written here. To put it in understandable language, it is a period longer than trillions, trillions of years.
According to this concept, the universe has been repeating itself infinitely many times in infinite time and infinite space. Some similar things are read in Indian philosophy. In Buddhist philosophy, it is believed that we have been born infinite times in the universe and all the living beings of the universe have been our parents in one birth or the other, so we should have respect and friendship towards everyone.
Some scientists believe that the amount of matter in the universe is limited, that is, finite, so all matter, which is in the form of particles, can be arranged only a limited number of times. Thus they refute the idea of the universe repeating itself infinitely. It is really an absurd idea how each molecule and atom of our body will be arranged in such a way after almost infinite years that we come back into existence in the same form in which we are today. Be that as it may, the availability of 'enough' time for the origin of this condition is being talked about is also almost infinite times the age of the visible universe. Till then this universe must have been spoiled many times.
When I read these things, I think how strange and big things some people think about! However, if there is any merit to this concept, I would be happy to meet you 'again' after almost an eternity. But… wait, isn't it possible that we have already met almost an infinite number of years ago… and that too not once but almost an infinite number of times!
no friend! Nothing is kept in these things. This thought is good Ghalib to keep the heart happy. I agree that:
Today at this time you are us,
Can't say where will be tomorrow.
life is like a river
Can't flow together for a long time.
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