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Thread: Does the present actually exist?

  1. #11
    Master political analyst Dittohead not!'s Avatar
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    Quote Originally Posted by NightSwimmer View Post
    A point exists as a conceptual object within Euclidian geometry, in spite of having no physical dimensions.
    Yes, a point, like the present, is a conceptual object. So, that must mean it exists only as a concept, i.e., only in our own minds but not as a physical reality.

  2. #12
    Thought Provocateur NightSwimmer's Avatar
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    Quote Originally Posted by Dittohead not! View Post
    Yes, a point, like the present, is a conceptual object. So, that must mean it exists only as a concept, i.e., only in our own minds but not as a physical reality.
    Does time exist as a "physical reality"?

    Does "distance"?

    It could be argued that both are merely concepts.

  3. #13
    Chubby Member
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    Life is but a dream.

    Get really, really good at something like music or painting or...well, anything, really, and once in a while you'll vanish completely into the moment.

  4. #14
    Established Member NeoVsMatrix's Avatar
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    Quote Originally Posted by Djinn View Post
    It's like saying that a mathematically-perfect sphere sitting on a mathematically-perfect surface aren't actually touching, because the area of contact is "zero."

    The answer is that you're looking at things in mathematically-perfect terms, while such constructs in the physical universe are subject to physical properties and imperfections.
    Yet, with the "physical ability"of creating such mathematical perfect surfaces, for the sphere, AND the surface.. that object would physically, and in reality, rest on the surface, and not hover in mid air above the surface. correct ?

  5. #15
    Shiny Purple Member namvet69's Avatar
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    Back in college, I was looking for a fourth course to fill out my semester. I'd already signed up for some tough subjects so I was looking for some interesting fluff as an elective. I couldn't believe my luck when I saw a course in Philosophy called "The Philosophy of Logic" Well, I jumped at it and couldn't believe it wasn't already filled. About the first fifteen minutes into the first class, I knew why. I realized that it was anything but fluff. Concepts and Mathematical intricacies galore. I had a headache almost immediately. I ran to the office and dropped and added something else. Whew! That's what this reminds me of. LOL

  6. #16
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    Quote Originally Posted by namvet69 View Post
    Back in college, I was looking for a fourth course to fill out my semester. I'd already signed up for some tough subjects so I was looking for some interesting fluff as an elective. I couldn't believe my luck when I saw a course in Philosophy called "The Philosophy of Logic" Well, I jumped at it and couldn't believe it wasn't already filled. About the first fifteen minutes into the first class, I knew why. I realized that it was anything but fluff. Concepts and Mathematical intricacies galore. I had a headache almost immediately. I ran to the office and dropped and added something else. Whew! That's what this reminds me of. LOL
    LOL, I have done that.

    They trick you on purpose I tell ya.

  7. #17
    Bizarroland Observer Thx1138's Avatar
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    Hmm, is there a "graininess" to time?

    I don't believe so.

    It would require two states: "on and off," time would have to turn on for a duration and then off for some duration. (But how do you measure the "off" duration? )

    It just seems to make more sense that what we think of as time, perception really is just a continuous flow, it is as grainy as you wish to perceive...

    Personally I don't believe time exists as a distinct force or phenomenon or "dimension."

    In other words, it just plain doesn't "exist."

    And it's very easy for things that don't exist, "time," "space" to go on forever...

    It's a great question though, perhaps we will never know.

    Thx

  8. #18
    Master political analyst Dittohead not!'s Avatar
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    Quote Originally Posted by NightSwimmer View Post
    Does time exist as a "physical reality"?

    Does "distance"?

    It could be argued that both are merely concepts.
    Yes, it could. Do you think they are merely concepts?

  9. #19
    Moderator libertariat720's Avatar
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    Once you designate a time for the present, that point is in the past.

    The present is timeless, it's eternal.

    Until the end of time of course.

  10. #20
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    Quote Originally Posted by Djinn View Post
    It's like saying that a mathematically-perfect sphere sitting on a mathematically-perfect surface aren't actually touching, because the area of contact is "zero."

    The answer is that you're looking at things in mathematically-perfect terms, while such constructs in the physical universe are subject to physical properties and imperfections.
    I disagree.

    What is imperfect is our powers of observation, not reality itself.

    At quantum scales, reality is probabilistic, as shown in schrodinger's thought experiment (schrodinger's cat). The point at which reality collapses to one probable outcome or the other (whether the cat is alive or dead) is indeterminate hence quantum mechanics sees it as both alive and dead at the same time.

    That is why I have been saying all along that the empirical method has very real, physically quantifiable limits -- not that reality is imperfect.

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