Is there a unity across scale in the universe?

  • Context: High School 
  • Thread starter Thread starter Mazeikas
  • Start date Start date
  • Tags Tags
    Scale Unity Universe
Click For Summary

Discussion Overview

The discussion explores the relationship between scales in the universe, particularly the perceived disconnect between General Relativity (GR) and Quantum Physics (QP). Participants examine whether this disconnect is a result of human cognition or limitations in data and understanding. The conversation touches on theoretical compatibility, the nature of truth in scientific models, and the implications of human perception on understanding the universe.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants propose that the concepts of micro and macro scales are relative to human perception, suggesting that both GR and QP may coexist without contradiction.
  • Others argue that while GR and QP yield useful predictions, the notion of them being "truth" is debatable, as future experiments could reveal their limitations.
  • A participant suggests that the term "efficient" might better describe the theories rather than "truth," emphasizing that human evolution may prioritize survival over accurate comprehension of reality.
  • It is noted that the two theories are compatible up to a certain point, but full compatibility remains uncertain.
  • One participant challenges the idea that human cognition limits understanding, suggesting instead that the issue lies in the lack of sufficient data at scales relevant to quantum gravity.

Areas of Agreement / Disagreement

Participants generally agree that the concepts of GR and QP may be compatible, but there is no consensus on whether they are fully compatible or how to define "truth" in this context. The discussion remains unresolved regarding the implications of human cognition versus data limitations.

Contextual Notes

The discussion highlights limitations related to the current understanding of quantum gravity and the dependence on available data, which may affect interpretations of the compatibility between GR and QP.

Mazeikas
Is our concept of scale, of micro and macro, of quantum and cosmic, relative to our perception as humans? If General Relativity and Quantum Physics both yield truth, then perhaps it is an error in human cognition that seems to perceive a disconnect between the two. The universe is just the universe, and the very large and the very small are existing simultaneously. They must exist together, is it just our limited human mind that cannot comprehend this?
 
Space news on Phys.org
Mazeikas said:
If General Relativity and Quantum Physics both yield truth, then perhaps it is an error in human cognition that seems to perceive a disconnect between the two.

Whether GR and QP yield "truth" is debatable. Both make testable predictions which have been overwhelmingly verified to within the accuracy of our instruments, so we consider them as "truth" in the sense that they are useful and allow us to build working objects and models based on their rules. Whether they are the "ultimate truth" is utterly unknowable except that they can be shown not to be true if future experiments reveal that they're laws are incomplete or inaccurate.

Mazeikas said:
The universe is just the universe, and the very large and the very small are existing simultaneously. They must exist together, is it just our limited human mind that cannot comprehend this?

We comprehend it just fine. Just because we don't know if the two theories are completely compatible doesn't mean that we have to shrug our shoulders and say, "We don't understand".
 
I agree that the term "truth" is debatable, but perhaps "efficient" could work for now. I think we evolved to survive rather than to comprehend reality accurately, and am not giving a discouraging message of shrugging it off. I intended my point to be positive, that clearly the two are compatible, we just haven't seen it yet.
 
The two theories are known to be compatible up to a point, but we don't know if they are fully compatible.

Mazeikas said:
I think we evolved to survive rather than to comprehend reality accurately

Indeed. That's why the scientific process and the principles underlying it are so important.
 
I hear you, perhaps you are correct. And I agree fully, very important!
 
Mazeikas said:
They must exist together, is it just our limited human mind that cannot comprehend this?
I don't think this has anything to do with the limitations of the human mind. This is more about having limited data. We simply don't have good data at the scales where quantum gravity would come into play.
 
That is fascinating to me, thank you. :)
 

Similar threads

  • · Replies 20 ·
Replies
20
Views
3K
  • · Replies 22 ·
Replies
22
Views
2K
  • · Replies 11 ·
Replies
11
Views
10K
  • · Replies 54 ·
2
Replies
54
Views
6K
  • · Replies 17 ·
Replies
17
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 28 ·
Replies
28
Views
5K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 8 ·
Replies
8
Views
4K
  • · Replies 25 ·
Replies
25
Views
4K