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12 Apr 2012, 5:17 pm

naturalplastic wrote:
Why dont you make the question simpler for yourself (and the rest of us).

What if you threw dice a hundred times in a row.
Or what if you spun a roulette wheel a hundred times.

And then went back in time and did the same?

Would you get the same sequence of a 100 numbers?

It would be no different than going back the next day and throwing the same dice a hundred times.

You would get a different set of 100 numbers.


But if you used a random number generator in a computer you might actually get the same sequence of 100 numbers because random number generators are not really random.



Rolling dice and spinning roulette are deterministic processes that are unpredictable. And the reason for their lack of predictability is because they are extremely sensitive to initial conditions. So if you were to perform 100 dice rolls one day, then travel back in time and do it all over again, the initial conditions would be different and thus the results would be different. There are deterministic recursive functions that can produce unpredictable results provided that they're highly sensitive to initial conditions. That's the essence of the Butterfly Effect.



ruveyn
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13 Apr 2012, 5:41 am

there is no way to go backward in time. Even if you accept Closed Time Lines from General Relativity you cannot go back to the time prior to the creation of a time machine. That is why the world is not filled with time travelers. The machine has not been invented yet.

ruveyn



15 Apr 2012, 10:33 am

ruveyn wrote:
That is why the world is not filled with time travelers. The machine has not been invented yet.

ruveyn


You're assuming the future actually exists already.



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15 Apr 2012, 4:30 pm

AspieRogue wrote:
ruveyn wrote:
That is why the world is not filled with time travelers. The machine has not been invented yet.

ruveyn


You're assuming the future actually exists already.


Perhaps many futures exist. The Now instant is an illusion.

ruveyn



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15 Apr 2012, 9:53 pm

say time travel doesn't work, what about moving between the 4-10th dimensions?


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16 Apr 2012, 6:01 pm

Rax wrote:
say time travel doesn't work, what about moving between the 4-10th dimensions?
I've never understood why people speak of "moving between ... dimensions". Presumably they have no idea what a dimension is. You cannot move between the dimension of height and the dimension of width, say.


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16 Apr 2012, 8:33 pm

This thread is way over my head.


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