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  1. Polymath257

    Why Didn't the Universe Always Exist?

    No, it does not. All it says is that the universe of spacetime exists. There is no 'creation' because creation happens *within time*. So, logically, the BB does NOT involve the 'creation' of spacetime at all.
  2. Polymath257

    Why Didn't the Universe Always Exist?

    Well, it isn't. Science is based on the scientific method: collecting data, making hypotheses, making predictions based on the hypotheses, testing to see if new data agrees with the predictions, and changing hypotheses as required. There is no assumption of 'naturalism': simply the requirement...
  3. Polymath257

    Why Didn't the Universe Always Exist?

    On the contrary, it is based on the best evidence we have currently: analysis of how the brain works, analysis of different states of consciousness, analysis of how conscious states changwe based on changes in the brain, etc. The neuroplasticity is simply the fact that there are feedback loops...
  4. Polymath257

    Why Didn't the Universe Always Exist?

    The rule is a thought, which is a brain state, and so supervenes on the physical.
  5. Polymath257

    Why Didn't the Universe Always Exist?

    What makes you think consciousness is non-physical? EVERY piece of information we have about it suggests that it is a consequence of brain processes. My position is that everything supervenes on the physical: in order for anything to be different, something physical must be different.
  6. Polymath257

    Why Didn't the Universe Always Exist?

    There is reason to *postulate* it as a hypothesis. And that hypothesis is supported as long as no other causes are found.
  7. Polymath257

    Why Didn't the Universe Always Exist?

    ALL causes we know about are within the universe. Until we see causes outside of it, there is no reason to postulate such. It seems you have difficulty with the concept of a definition. A definition is simply how we use language. So, if I want to define a smorgle to be a yellow unicorn, I can...
  8. Polymath257

    Why Didn't the Universe Always Exist?

    Well, as an example, neutrinos are 'dark' in this sense. They are not charged, almost no mass, no magnetic field, etc. They do not interact strongly via electromagnetism. So they are 'dark'. They were initially a candidate for dark matter, but it turns out that their small mass would make them...
  9. Polymath257

    Why Didn't the Universe Always Exist?

    A less inflated balloon represents the past. Since there is no radius smaller than 0, there simply is no 'before the balloon'.
  10. Polymath257

    Why Didn't the Universe Always Exist?

    Nobody is 'blowing up' the balloon. In the analogy, three dimensional space is the universe of spacetime. Time is the radial coordinate. That is all. ALL causality happens within the universe. As I see it, the universe of spacetime 'simply exists'. It has no cause because it *cannot* have a...
  11. Polymath257

    Why Didn't the Universe Always Exist?

    Yes, I have. But it seems I am busier now than before. We moved and are getting the new place in order. My mother has been having health issues, and I am taking care of the dog more. Once things get reasonably stabilized, I will return.
  12. Polymath257

    Why Didn't the Universe Always Exist?

    Yes, that could be a definition used. Now, the issue is whether such a thing actually exists.
  13. Polymath257

    Why Didn't the Universe Always Exist?

    Not really. The universe is defined as all that is physical and time is physical in the relevant sense of being measurable. The term 'before' implies time and thereby physicality, and so the universe.
  14. Polymath257

    Why Didn't the Universe Always Exist?

    When you use the words 'came from', you are implying the existence of time. But time is part of the universe of spacetime. That is true whether or not time is finite into the past. An analogy is to look at a globe and think of latitude as analogous to time and longitude as analogous to space...
  15. Polymath257

    Why Didn't the Universe Always Exist?

    if General Relativity is to be believed, there simply was no '50 billion years ago'. In that sense, there was no 'space' (or time).
  16. Polymath257

    Why Didn't the Universe Always Exist?

    Probably not for long. I have life issues over here.
  17. Polymath257

    Why Didn't the Universe Always Exist?

    Actually, not. The 'dark' is a way of saying 'it interacts at most weakly with electromagnetic radiation'.
  18. Polymath257

    Why Didn't the Universe Always Exist?

    What does that even mean? That we use math to model concepts? Sure. That math is an abstract subject? Sure. beyond that? I have no idea.
  19. Polymath257

    Why Didn't the Universe Always Exist?

    And this is wrong. Not 'expanding into' such a field. The field is the lowest energy state of a vacuum (i.e, of space) and space is expanding.
  20. Polymath257

    Why Didn't the Universe Always Exist?

    More specifically, the three dimensional submanifold of space is the boundary between the past and the future. Spacetime is a four dimensional manifold.
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