The illusion of time.
According to theoretical physicist Carlo Rovelli, time is an illusion: our naive perception of its flow doesn’t correspond to physical reality. Indeed, as Rovelli argues in The Order of Time, much more is illusory,
#Time
@Klaatu____ @BaluSreevidya
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including Isaac Newton’s picture of a universally ticking clock.Even Albert Einstein’s relativistic space-time-an elastic manifold that contorts so that local times differ depending on one’s relative speed or proximity to a mass -is just an effective simplification. @AlSudu
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So what does Rovelli think is really going on? He posits that reality is just a complex network of events onto which we project sequences of past, present and future. The whole Universe obeys the laws of quantum mechanics and thermodynamics, out of which time emerges.
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As Rovelli explains, the apparent existence of time — in our perceptions and in physical descriptions, written in the mathematical languages of Newton, Einstein and Erwin Schrödinger — comes not from knowledge, but from ignorance. ‘Forward in time’ is the direction 4/n

in which entropy increases, and in which we gain information.
Einstein showed us that time is just a fourth dimension and that there is nothing special about ‘now’; even ‘past’ and ‘future’ are not always well defined. The malleability of space and time mean that two events 5/n

occurring far apart might even happen in one order when viewed by one observer, and in the opposite order when viewed by another.
In part two, “The World without Time”, Rovelli puts forward the idea that events (just a word for a given time and location at which 6/n

something might happen), rather than particles or fields, are the basic constituents of the world. The task of physics is to describe the relationships between those events: as Rovelli notes, “A storm is not a thing, it’s a collection of occurrences.” At our level, each of 7/n

those events looks like the interaction of particles at a particular position and time; but time and space themselves really only manifest out of their interactions and the web of causality between them.
In the final section, “The Sources of Time”, Rovelli reconstructs 8/n

how our illusions have arisen, from aspects of thermodynamics and quantum mechanics. He argues that our perception of time’s flow depends entirely on our inability to see the world in all its detail. Quantum uncertainty means we cannot know the positions and speeds 9/n

of all the particles in the Universe. If we could, there would be no entropy, and no unravelling of time. Rovelli originated this ‘thermal time hypothesis’ with French mathematician Alain Connes.

In Indian concept, of spiritual sciences, In yoga, we refer to the human
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spine as the Merudanda, which means the axis of the universe. How can one’s spine be the axis of the universe? Today, modern science sees the whole existence as a vibration. Or if you go deeper, the same energy is reverberating in so many ways. We also know 11/n

today that whatever you call as creation is held in the lap of vast nothingness – which scientisits are trying to find names for like dark energy; But beyond that, we know there are still totally empty spaces. From the grossest physical entity to what you call the Divine, 12/n

it is just the same basis. It is just like a long paint stroke – first it comes out thick, then gets thinner and thinner, and becomes nothing. In the process of creation, you as a human being are a little closer to this emptiness.
The essential reverberation in 13/n

the human being is generated from the spine. The subtler it gets, the further it goes. If it is gross, it hangs around only to a certain extent. If it gets very subtle, you can throw it all over the place. Once your reverberations spread themselves all over the place, 14/n

your ability to perceive is also all over the place. Right now, what you call “myself”, in terms of your limited existence, is whatever is within the boundaries of your sensation. Whatever is within the boundaries of your experience is you. Whatever is outside your 15/n

boundaries of experience is someone or something else. By refining your reverberations, you can extend the boundaries of your experience endlessly. When we say, “Shiva opened his Third Eye,” it means he extended the boundaries of his experience in an unlimited way. 16/n

Then the whole existence is just a part of him and naturally he is the center. But how do you know he is the center?
Once you create a distance between you and the body, you will have the joy of knowing what kind of a machine has been handed over to you. 17/n

It has all the ingredients of bondage and freedom within it. You can make this divine – you can move your energy system in such a way that the body becomes a deity. Or you can be like a corpse. We say, you can either make this body into a Shava or a Shiva. 18/n

Shava means a corpse. Shiva means the Ultimate. It depends on what you do with it. It can function in ways you have never believed a human being could function.

The above is the excerpt of the following blogs,
1. https://www.nature.com/articles/d41586-018-04558-7
2. https://isha.sadhguru.org/in/en/wisdom/article/your-body-shava-or-shiva

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