If black holes don't exist then neither does the cosmic horizon?

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Discussion Overview

The discussion centers on the existence of black holes and their relationship to the concept of the cosmic event horizon. Participants explore whether the cosmic event horizon can exist if black holes, as traditionally understood, do not exist. The conversation touches on theoretical implications and the nature of information in relation to these horizons.

Discussion Character

  • Debate/contested, Conceptual clarification

Main Points Raised

  • One participant references Stephen Hawking's argument that non-penetrable event horizons do not exist, suggesting that this implies the cosmic event horizon also cannot exist, leading to the idea of an "apparent" horizon.
  • Another participant emphasizes that information is not lost when something crosses the cosmic event horizon, implying that all information from within the visible universe remains accessible.
  • A later reply expresses relief that galaxies crossing the cosmic event horizon are not lost forever, reinforcing the notion that information persists.

Areas of Agreement / Disagreement

Participants express differing views on the existence of black holes and the implications for the cosmic event horizon. The discussion remains unresolved, with multiple competing perspectives on these concepts.

Contextual Notes

There are assumptions regarding the definitions of event horizons and the nature of information that are not fully explored, leaving some points ambiguous.

nuclearhead
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So according to Stephen Hawking, non-penetrable event horizons don't really exist.

So by the same argument the cosmic event horizon can't exist either right? Only an "apparent" horizon which may hold information from outside the visible Universe for a short while until it enters the visible Universe.

The cosmic event horizon is often described as like living "inside" a black hole. But since black holes don't exist any more then this also means that we are not cut off from the rest of the Universe by a cosmic event horizon?

Have I got that right? What do you think?
 
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I think the critical notion is that information is not lost when something crosses that horizon.
So anything that was ever within our visible universe has never been lost without a trace.
 
I think the critical notion is that information is not lost when something crosses that horizon.
So anything that was ever within our visible universe has never been lost without a trace.
 
Well that's good then. It's good to know that all those galaxys crossing the Cosmic Event Horizon are not lost forever! :)
 

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