Is Time an Illusion? A 13-Year-Old's Take on the Block Universe Concept

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Discussion Overview

The discussion revolves around the concept of time and its nature, particularly in relation to the "block universe" interpretation of special relativity. Participants explore perceptions of time, its relativity, and the implications of these ideas on understanding the universe.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • One participant expresses skepticism about the "block universe" concept, suggesting that time is perceived uniformly by everyone, which they believe leads to the notion of time being an illusion.
  • Another participant counters that time is not the same for everyone, referencing Einstein's theory of special relativity and the relativity of time based on the observer's frame of reference.
  • A third participant clarifies that the "block universe" is an interpretation of special relativity, indicating that it can be false without negating the principles of special relativity itself.
  • There is a description of the "block universe" as a representation of four-dimensional spacetime, with an explanation of how to visualize it using a two-dimensional plane and a third dimension for time.

Areas of Agreement / Disagreement

Participants exhibit disagreement regarding the nature of time, with some asserting its uniformity and others emphasizing its relativity. The discussion remains unresolved as differing views on the "block universe" and the perception of time are presented.

Contextual Notes

The discussion includes varying interpretations of time and the "block universe," with limitations in definitions and assumptions about the nature of time and spacetime not fully addressed.

Canutej24
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I'm 13, so I was reading Discover and I read something about a "block universe" and I thought it was a bunch of hogwash... here is how I see it... Time is the same for everybody its just how people perceive it that makes people think its an illusion... any feedback? Thanks!
 
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Canutej24 said:
Time is the same for everybody
Time is most certainly NOT the same for everyone. It's relative to the observer - it's all derived from Einstein's theory of special relativity.
It's basically based on the fact that the speed of light is the same for everyone in a vacuum, and since speed is dependent on distance and time, distance and time must be different for different observers to ensure light moves with the same speed relative to everyone.
 
Canutej24 said:
I read something about a "block universe"

The "block universe" is an interpretation of special relativity; it is not the same as SR itself. The "block universe" can be false without making SR itself (including the relativity of time) false.
 
Canutej24 said:
I'm 13, so I was reading Discover and I read something about a "block universe" and I thought it was a bunch of hogwash... here is how I see it... Time is the same for everybody its just how people perceive it that makes people think its an illusion... any feedback? Thanks!
The block universe just refers to 4 dimensional spacetime. If you try to draw it you will notice your piece of paper has too few dimensions. So, drop one spatial dimension and draw a 2D plane for space. Draw time as the 3rd dimension using perspective and there you have it, the universe represented as a block.

This is the same reason light cones are called cones when they are really hyperspheres.
 
Dear spacejunkie,
thank u for the feedback... it helps a lot
 

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