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A Challenge


tsturm1967

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I propose the following challenge: let's build a fortress.

Would it be possible to create a wall using the laws of nature so as to make "breaking it" not even an option?

 

I'd guess it'd be a safe bet on kickstarter for a nice price: one million for anyone who proves is is not possible - or for an idea to make it

possible. Would be interesting to find out what's on the other side of that wall, once its cut off from the universe ;-)

 

Kind regards,

Thomas

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I propose the following challenge: let's build a fortress.

Would it be possible to create a wall using the laws of nature so as to make "breaking it" not even an option?

 

I'd guess it'd be a safe bet on kickstarter for a nice price: one million for anyone who proves is is not possible - or for an idea to make it

possible. Would be interesting to find out what's on the other side of that wall, once its cut off from the universe ;-)

 

Kind regards,

Thomas

I think you just lost a million. It's hard to be certain because the problem is poorly specified.

Anything inside the event horizon of a black hole is "cut off" from the rest of the universe, but it is still part of the universe.

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I think you just lost a million. It's hard to be certain because the problem is poorly specified.

Anything inside the event horizon of a black hole is "cut off" from the rest of the universe, but it is still part of the universe.

"If you build it...they will not come back"

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A) I am not betting - I would not "loose" a million either way: either there is a way to build an impenetrable wall: in which case there would be something like a perfect fortress. Interesting. Or someone comes up with some proof that there will never be such a thing. Also interesting. Either fact could make you more than 1 million.

B) Yes, but anything in a black hole would not be in need of protection. I suppose you could arrange black holes so their event horizons touch - and hide behind that wall. Just whether such a "wall" would be stable in itself...

 

@Daecon: you see, if something got though it, it wouldn't be a good wall. If nothing gets through it, you can build a container where "inside" wouldn't actually interact with outside in any way shape or form. Or rather - my requirement is only that "outside" can not interact with "inside".

"Why do you think it wouldn't be possible?" I don't. I'd be surprised, though, nonetheless. Just thought It'd be a nice thought experiment. I do not think it is poorly specified either.

 

Can there be a barrier that can not be crossed nor destroyed ?

 

If you think B gets close....well the close-packing of black holes isn't going to be very stable - hurl any kind of heavy object at it, an some of the black holes would move - creating a gap in the wall.

If it was that easy, I wouldn't have bothered..

Edited by tsturm1967
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"I am not betting - I would not "loose" a million either way: either there is a way to build an impenetrable wall: in which case there would be something like a perfect fortress. Interesting. Or someone comes up with some proof that there will never be such a thing. Also interesting. Either fact could make you more than 1 million."

The "fact" is widely known.

How do you propose to make a million form it?

If you can't then you just lost the million you had talked about making.

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I am sorry. I did not mean to upset anyone. I did get the answers I deserved though because it is a rather silly notion - an uncrossable moat, unbreakable barrier: Whatever. The point is, that there wasn't a "construction order": this does not mean the problem was poorly specified. If you read my first post, you already have the solution, though. Having a barrier in any shape or form that is "uncrossable" by principle simply amounts to asking "could there be a place in the universe that is completely unreachable?" - even black holes "evaporate" in time and thus exchange radiation with their surroundings. It is not uncommon for them to collide - enabling us to directly measure gravitational waves. Any effect on one side of the "barrier" must have a cause on the other side - and vice versa. Whatever your assumptions on an "inside" of a black hole: it is clearly affected by its surroundings: thus, the event horizon does not qualify as an impenetrable border. For my part, I came to the conclusion that such a barrier is theoretically impossible as it would lead to consequences which would simply violate the conservation of energy.This was just not the first notion I had. First think, then write. Sorry folks. Case closed.

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