Exploring the Block Universe: The Current Physics Consensus on Block Time

In summary, there is no consensus among physicists about the block universe theory. While some, like Deutsch, believe in a quantum many world block universe, others, like Rovelli and Dieks, argue against the concept of block time. While relativity is often used as a model for predicting physical phenomena, it does not necessarily require a belief in the block universe. Additionally, there is ongoing debate about the philosophical and metaphysical implications of quantum mechanics, which further complicates the consensus on the block universe theory.
  • #1
I2004
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What is the current physics consensus of the block universe?

I know its what Einsteins theory tells us and comes with relativity, Deutsch believes in a quantum many world block universe, but Rovelli and Dieks argue against block time?

Is block time still the main accepted theory of time we have...
 
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  • #2
Relativity is certainly consistent with the "block universe" view, but I don't think it *requires* that view. Relativity uses 4-dimensional spacetime as a model for making physical predictions; to the extent that there is a "consensus", I would say it's about that, not about any additional philosophical or metaphysical claims concerning the "block universe".

Also, as you point out, we know that relativity by itself, i.e., classical SR and GR, can't be a complete theory because it's not quantum mechanical, and there is certainly no consensus about the philosophical or metaphysical implications of quantum mechanics.
 

Related to Exploring the Block Universe: The Current Physics Consensus on Block Time

1. What is the block universe theory?

The block universe theory, also known as the block time theory, is a concept in physics that suggests that time is a dimension similar to height, width, and length. This means that past, present, and future events all exist simultaneously in a four-dimensional spacetime block. This theory challenges the traditional linear concept of time and suggests that everything that has ever happened or will happen already exists.

2. What is the current consensus among physicists regarding the block universe theory?

The current consensus among physicists is that the block universe theory is the most accurate way to understand time. This theory is supported by various scientific concepts, such as the theory of relativity, which suggests that time is relative and not absolute. Additionally, many experiments, such as the famous twin paradox, have provided evidence for the block universe theory.

3. Does the block universe theory allow for free will?

The answer to this question is a matter of philosophical debate. Some argue that the block universe theory implies that everything is predetermined and therefore, free will does not exist. However, others argue that free will can still exist within the block universe, as our choices are still a part of the predetermined events in the spacetime block. Ultimately, the answer to this question depends on one's interpretation of the theory.

4. How does the block universe theory affect our perception of time?

The block universe theory challenges the traditional linear perception of time. It suggests that our perception of time as a continuous flow is an illusion, and that past, present, and future events all exist simultaneously. This can be difficult for us to comprehend as our everyday experience of time is based on the past shaping the present and the present shaping the future. However, the block universe theory suggests that all events are equally real and that our perception of time is limited by our human perspective.

5. Are there any potential implications of the block universe theory?

There are various potential implications of the block universe theory, both in physics and philosophy. In physics, this theory could potentially help reconcile the theories of general relativity and quantum mechanics, which have been notoriously difficult to unite. In philosophy, the block universe theory challenges our perception of reality and raises questions about the nature of time, free will, and the role of consciousness in the universe.

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