Reflecting about the book: "Just Six Numbers", Martin Rees

In summary, the six values of i.e. the parameters that are required for a universe like ours to exist and that have to be like they are with a high degree of precision in order for there to be life and intelligence are very unlikely to occur by chance. However, if we assume that our universe is just one of an infinite number of universes that pop up and disappear, it is still possible that we are in one of those universes with those parameters.
  • #1
Hellmut1956
43
18
Reflecting about that i.e. just 6 parameters whose value have to be like they are with a high degree of precision to have a universe like ours and that the probability for having those 6 values to be as they are should have a very low probability in connection with the theories about multiverse. They write that it may be that an infinite number of universes pop up and disappear, exist at the same "time", the concept of time and simultaneity are equally to be used in awareness of the concept in a context of science and physics and cosmology. It just is said it happens to be that only in this universe or those with equal values of i.e. those 6 numbers there is the possibility to have life and intelligence develop so that there are individuals who can reflect about this kind of questions.
I did apply in my reflections this fact that a universe like ours is extremely unlikely to be but that still the event of such an universe is actually in place and the one in which we live.
Why i.e can we not ask ourselves the question about how a such universe that is in extreme not probable would have to be without conflict of what we know about our universe and its laws of physics would have to be to make possible beaming yourself from any place in the universe to any other place in an economic and efficient way and that we could detect the property in an affordable and possible way within the reach of our technology and our science? I know, such an universe is totally not probable and its probability to be true is in extreme low. But is not our universe with its parameters of which the 6 numbers in the book of Martin Rees refer to also highly unlikely? So I am postulating that being in an universe whose defining properties require i.e. those 6 parameters to be as they are to a high degree of precision is not equally unlikely and why can we not happen to be in a universe where properties not being in conflict with what we know about the universe and that can be detected with our knowledge and science?
If you apply additionally to this the concepts of those "parallel universes" next to each other like layers as some studies related to the string theories, the just by searching for such properties specified we might result of being in a "layer" that has this additional properties?
As I wrote at the beginning, this are just reflections. But if I would be 4 decades younger than I am and would love physics as I have always done this would be a direction I would love to study and research! Just to put in relation as to how little we really know about how even just our universe is. Just a few years ago we had not even a clue about what euphemistically we call dark energy and dark matter. And this makes up the dominant part of what exists in our universe!
 
Physics news on Phys.org
  • #2
The trouble with statements about the probability of the six numbers lying within the range that makes life possible is that they presuppose that we know a probability distribution for the possible values of such numbers.
But we do not have such a probability distribution, and have no means of estimating one, so any statement about the probability of the numbers lying within any particular range - however narrow - is meaningless.
 
  • Like
Likes Agent Smith and Choppy
  • #3
One point of view totally valid and as correct as also the opposite opinion would be! The question is which point of view might open new fields of investigation! Your sentence at the bottom of your contribution should support my point of view: How can we judge something to be meaningless when we accept the concept that the universe could be more different from what we think and even so different that we would not even be able to suppose how it is?
 
  • #4
It seems to me that in the immediate aftermath of the big bang that a massive variety of initial particles would be formed.
Some small subset(s) randomly happen to be able to mutually form stable groupings (the particles of the standard model, dark matter) and thus are more likely to persist.
Other types of particles may exist that experience 'other' forces but are not able to find stable partnerships decay and are recycled.
Over time (while the universe is still hot enough) particles pile up in the stable groupings and others disappear and are not now seen.
So there is no need for miraculous pre-defined constants - the statistical variety of original particles and simple thermodynamic stability would probably result in a stable outcome in any hypothetical universe that did not collapse.

Is there anything wrong with this conjecture ?
 
  • #5
Hellmut1956 said:
How can we judge something to be meaningless when we accept the concept that the universe could be more different from what we think and even so different that we would not even be able to suppose how it is?
My comment about meaninglessness was solely confined to assertions that we have an idea about the probability that the universe would be the way it is.
It is by no means meaningless to speculate on what the universe would be like if the six numbers were different. The whole genre of science fiction would be nullified if 'what if' speculations were considered meaningless. Speculation about things like collections of many spacetimes, each with different sets of numbers, are bread and butter for metaphysicians and speculative science writers, and there's absolutely nothing wrong with that.
 

FAQ: Reflecting about the book: "Just Six Numbers", Martin Rees

1. What is the main premise of "Just Six Numbers"?

The main premise of "Just Six Numbers" is that the fundamental laws and constants of nature are precisely tuned to allow the existence of life in the universe.

2. Who is Martin Rees and why did he write this book?

Martin Rees is a British astrophysicist and cosmologist who wrote "Just Six Numbers" to explore the idea of a "fine-tuned" universe and its implications for the existence of intelligent life.

3. What are the six numbers referred to in the book's title?

The six numbers refer to the fundamental physical constants that govern the behavior of the universe: the strengths of the four fundamental forces (gravity, electromagnetism, strong nuclear force, and weak nuclear force), the mass of the electron, and the ratio of the masses of the proton and electron.

4. How does the concept of fine-tuning apply to the universe?

The concept of fine-tuning refers to the precise values of the six fundamental constants that allow for the existence of complex, intelligent life in the universe. If any of these constants were even slightly different, the universe would not be able to support life as we know it.

5. What are some of the potential implications of the fine-tuned universe for science and philosophy?

The idea of a fine-tuned universe has sparked debate in both the scientific and philosophical communities. Some see it as evidence for a higher power or intelligent design, while others attribute it to chance or the existence of multiple universes. It also raises questions about the nature of reality and our place in the universe.

Similar threads

Replies
1
Views
1K
Replies
1
Views
2K
Replies
4
Views
307
Replies
3
Views
1K
Replies
8
Views
2K
Replies
11
Views
2K
Back
Top