Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Dimensionless universe

  1. Apr 16, 2015 #1
    I'm talking to a friend here in whatsapp, he says that he believe in a 'dimensionless universe', look what he said... "let's consider that time is an illusion and since time has such an intimate relationship with space, space is an illusion as well". he said that the concept of universal wholeness (quantum interconnectedness) points to a universe where geometry and dimensions are abstract concepts. The map of the territory but not the territory itself. he got these ideas the book called "The end of time: the next revolution in physics"

    what does he means about it? a dimensionless universe? :oldconfused:
  2. jcsd
  3. Apr 16, 2015 #2


    User Avatar
    Gold Member

    Who knows. The whole paragraph is what we call "word salad".

    ...time is an illusion...
    ...therefore (space is as well)...
    ...universal wholeness (quantum interconnectedness)...
    ...points to...

    None of these phrases mean anything.
  4. Apr 16, 2015 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    Tell him his whole idea is an illusion, especially when he thinks he has learned things sufficiently just from a Pop-Sci book.

  5. Apr 16, 2015 #4
    Thanks, I came here to ask, because I really didn't understand, how would be a "dimensionless universe" lol, very nonsense
  6. Apr 16, 2015 #5


    User Avatar
    Science Advisor

    Tell him that since time and space are illusions, he has nothing to lose by giving you the login and password to his illusory bank account.
  7. Apr 17, 2015 #6


    User Avatar
    Gold Member
    2017 Award

    I'm personally wary when I hear loosely stated arguments like this about "illusions"; it is so easy to call things illusions, but harder to demonstrate that they are illusions. Illusions of what? And it's easy to go further down that seemingly endless road, e.g X is just an illusion of Y, but Y may also be an illusion of Z and so on...

    Clarity is needed IMO. It's friday, so I'm going to listen to some music, I'll start with Imagination - Just An Illusion :smile:.
  8. Apr 17, 2015 #7


    User Avatar
    Gold Member

    The OP's friend might get some benefit from reading up on Plato's allegory of the cave.

    Basically, thinking things are an illusion is an illusion.
  9. Apr 17, 2015 #8

    Ivan Seeking

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

  10. Apr 18, 2015 #9
    The people who say "Everything's an illusion, maaaannn" are some of the most annoying, especially when they try to follow it up with a haphazard understanding of philosophy or physics.

    Time isn't an illusion, and space being illusory would have nothing to do with it being dimensionless, and there is no such thing as a "dimensionless" space anyway, because a space has to be a space of something, like the space of all ordered pairs of real numbers (x, y), also known as ℝ2, or the space of solutions to a differential equation.
  11. Apr 18, 2015 #10


    User Avatar
    Science Advisor
    Gold Member

    A good place to start is to reach an agreement on what constitutes a 'dimension'.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Dimensionless universe Date
What is the role of schools and universities? Mar 8, 2018
Why mathematicians do not solve mathematical theories? Feb 27, 2018
News Universe is a Simulation Feb 27, 2018
Dimensionless units Aug 14, 2017
Dimensionful vs dimensionless constants Dec 13, 2009