Does time exist?

Discussion in 'Alternative Theories' started by Sibilia, Sep 28, 2015.

  1. Michael 345 Valued Senior Member

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    1,414
    While predictions of the future can be made it is open to question how precise are the predictions?

    If the temperature is predicted to be 34°C and when the reading is taken it is 33.99°C would that count as accurate or accurate enough to count as a prediction?

    I would also contend for any prediction someone must be present to observe if the prediction actually occurs

    So any prediction never happens for those who die before the predicted event happens

    For those who happen to be present at the prediction must then decide on how accurate was the prediction

    On the TV show QI it was just stated Nostradamus only ever made one accurate prediction when he said his last words

    Tomorrow, I shall no longer be here

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  3. Write4U Valued Senior Member

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    I agree with all the above except the term "actuates", which is a verb.
    IMO time is not a causal agent. All change is physically
    actuated and is the causal agent of time (of duration).

    All predictions of future events are based on knowledge of physical change or behavior, but as we never can know all the physical variables, any prediction of the future is speculative. At best an "educated guess" of causal potentials to be expressed in physical reality.
     
    Last edited: Mar 13, 2017
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  5. Sibilia Registered Senior Member

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    What do have in common changes and phenomena?

    1- They are sequential
    2- They occur in only one direction (from the past to the future)
    3- They are irreversible

    These are the characteristics that time transfers by ACTING on things.
     
    Last edited: Mar 15, 2017
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  7. hansda Valued Senior Member

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    If predictions are not precise, it will imply there is a scope/opportunity to develop new Laws.
     
  8. DaveC426913 Valued Senior Member

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    No sure what you mean by one direction and irreversible.

    Well, that turns out not to be true.

    Virtually all interactions in physics are time-reversible.
     
  9. exchemist Valued Senior Member

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    5,269
    Hmm, the 2nd Law of TD would not agree, surely?

    I seem to recall that any "spontaneous" thermodynamic change involves an increase in entropy and is not reversible.

    But that is the difference between an idealised individual physical interaction and the evolution of a thermodynamic ensemble.

    I assume what he or she is getting at is the idea of entropy increase as the "arrow of time" and all that.
     
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