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Thread: Does the present actually exist?

  1. #21
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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.
    It is not merely a concept. It is a property of space-time. The only problem is in what scale you wish to observe it.

    In cosmological scale, the geodesic (the movement of a point through space-time) is a smooth curve. In quantum scales, it isn't a smooth curve. It's sort of like a smooth paper except when you examine it under a microscope, it will show a series of imperceptible dents.

  2. #22
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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.
    Not only does time exist as a physical reality, it is one of the three fundamental quantities of physics. For any physical object, it must contain mass, spatial dimension, and must exist in time.

    What one might find odd, however, is that these three cannot be defined without reference to the others. The meter is defined as the distance traveled by a certain kind of radiation in one second and the second is defined as the period of a specific kind of radiation. Kilograms, of course, is defined by the displacement of a spring on a weighing scale.

    One might be tempted to conclude that these quantities do not exist except that if they don't exist, nothing can exist -- apart from ideas.

  3. #23
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    Quote Originally Posted by Dittohead not! View Post
    Anything that happened, even a picosecond or less ago, is in the past. What is a picosecond (or less) from now, is future. The present has no dimension in time. The duration of the present is exactly zero.

    So, if it has no dimension in time, does it actually exist? How can something that has no duration at all be said to be real? It's like an object that is zero millimeters by zero millimeters by zero millimeters. Does that object actually exist?
    What weighs an hour of time? How hot is an hour of time? How many time can we cook in a soup? ... So what means "to exist" in case of time at all? Something is existing if it is interacting with us. If your body would not interact with a sun then you could sleep in the middle of this sun without any problem. This sun would not exist for you. You would know nothing about. But you seem to know what time is. But what is this what's existing in case of time? What is interacting? A time force?

    Last edited by zaangalewa; 23rd February 2017 at 02:50 AM.

  4. #24
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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.
    An electron shows in experiments no inner structure nor a size. They seems to be points without physical dimension. But this points can let you dance before someone switches the power off and saves your life.

    Last edited by zaangalewa; 23rd February 2017 at 03:55 AM.

  5. #25
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    Quote Originally Posted by Dittohead not! View Post
    Anything that happened, even a picosecond or less ago, is in the past. What is a picosecond (or less) from now, is future. The present has no dimension in time. The duration of the present is exactly zero.

    So, if it has no dimension in time, does it actually exist? How can something that has no duration at all be said to be real? It's like an object that is zero millimeters by zero millimeters by zero millimeters. Does that object actually exist?
    There is a Theory on Time, that says the past, future, and thus, present, are already set.

    We can "remember" the past, because we are closer (in time...???) to the origin of the Universe. At SOME point, the Universe will be closer to the Entropy event, and, at that time, beings will start to remember the Future,but forget the past.....

    Hard for me to wrap my mind around that, but, I can see it to a degree.


    In the end, however, our entire existence is a "flash" in time, compared to the Universe.
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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.
    Good geometrical analogy:

    According to Geometric "laws," lines and points are CONCEPTUAL. Lines have ONE dimension, points have NONE.

    This is how we "visualize" the distance between POINT A and POINT B:

    . ________________________________________ .

    The "points" are simply our understanding of the "beginning," and the "end." (While these points may be actual PLACES, those are not part of the equation/Concept)

    The "line" is simply the "distance" between Point A and Point B. They do NOT actually take up space. Simply mathematical constructs, put in geometry, as a TOOL to aid us in conceptualization.....

  7. #27
    Master political analyst Dittohead not!'s Avatar
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    Quote Originally Posted by Rorschach View Post
    There is a Theory on Time, that says the past, future, and thus, present, are already set.

    We can "remember" the past, because we are closer (in time...???) to the origin of the Universe. At SOME point, the Universe will be closer to the Entropy event, and, at that time, beings will start to remember the Future,but forget the past.....

    Hard for me to wrap my mind around that, but, I can see it to a degree.


    In the end, however, our entire existence is a "flash" in time, compared to the Universe.
    If that entropy event means that we're half way between past and future, then it follows that time is not infinite.

    So, it's like an SD card with a video recorded on it. The entire video is there all the time, but it is being played from one end to the other. When it gets to the end, the entire video is still there.

    So, time ends, but it doesn't end. It can be started over, started from the middle, stopped again, even edited.
    Thanks from Rorschach

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    Council Member Djinn's Avatar
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    Quote Originally Posted by NeoVsMatrix View Post
    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 ?
    Well, the area in which the sphere is touching the surface is "zero." If the area of contact is zero, then they're not touching. Of course, you could say the same about two intersecting one-dimensional lines. Despite the intersection, the area of contact has a measurement of zero, which is the same area of contact between two NON-intersecting lines.

  9. #29
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    Quote Originally Posted by Djinn View Post
    Well, the area in which the sphere is touching the surface is "zero." If the area of contact is zero, then they're not touching. Of course, you could say the same about two intersecting one-dimensional lines. Despite the intersection, the area of contact has a measurement of zero, which is the same area of contact between two NON-intersecting lines.
    A point is an object that resides in euclidean space. We already know, as far back as democritus, that a physical object cannot be divided indefinitely and that, at some point, you must arrive at the smallest, indivisible part of matter.

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    Veteran Member Devil505's Avatar
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    Quote Originally Posted by Dittohead not! View Post
    Anything that happened, even a picosecond or less ago, is in the past. What is a picosecond (or less) from now, is future. The present has no dimension in time. The duration of the present is exactly zero.

    So, if it has no dimension in time, does it actually exist? How can something that has no duration at all be said to be real? It's like an object that is zero millimeters by zero millimeters by zero millimeters. Does that object actually exist?
    When you flip a coin the "present" is the moment the coin is flipped.

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