The Bekenstein bound? That doesn’t make any testable predictions, it’s just a calculation of some theoretical implications of a theoretical model of black holes. I don’t see why I should count that as evidence of anything in particular.
If you don’t believe that this result is likely to be true in reality, that’s fine, it is one possible position, it’s quite self-consistent.
But if one does believe that this result is likely to be true in reality, then that position would be difficult to reconcile with gravity not being fundamentally quantum.
No, I don’t think people should start by deciding if they think that, eg, black holes have internal structure or not. That’s backwards.
I don’t consider that bound a “result”, just a “part of a hypothesis” or “implication of a speculation”. The word “result” means, to me, something that follows from the data of experiments.
If we want to discuss that, then we need to step back.
How much do we believe that black holes exist at all? Are we certain, are we not quite certain? Everyone is talking as if it is certain, but how much should we believe that?
If we believe that black holes do exist to a sufficiently large degree of certainty, when did it become reasonable to believe that, after what events?
I suppose I’d say that without astronomical observations showing accretion disks and gravitational lensing without emission within an event horizon, the existence of black holes would be theoretically justified by general relativity but we wouldn’t be able to make strong statements about GR holding in such extreme conditions.
Yeah, and if one wants to be really sure, one needs to look at raw data a bit oneself (every time I do that, I am usually taken aback by how noisy those data are, and how it must be difficult to interpret them conclusively, and how I have a very powerful built-in bias to trust the reports on experimental data and on what those data mean, and that I should try to keep updating towards higher uncertainty in order to counter my built-in bias to trust the reports).
The Bekenstein bound? That doesn’t make any testable predictions, it’s just a calculation of some theoretical implications of a theoretical model of black holes. I don’t see why I should count that as evidence of anything in particular.
You should decide if you believe it or not.
If you don’t believe that this result is likely to be true in reality, that’s fine, it is one possible position, it’s quite self-consistent.
But if one does believe that this result is likely to be true in reality, then that position would be difficult to reconcile with gravity not being fundamentally quantum.
No, I don’t think people should start by deciding if they think that, eg, black holes have internal structure or not. That’s backwards.
I don’t consider that bound a “result”, just a “part of a hypothesis” or “implication of a speculation”. The word “result” means, to me, something that follows from the data of experiments.
If we want to discuss that, then we need to step back.
How much do we believe that black holes exist at all? Are we certain, are we not quite certain? Everyone is talking as if it is certain, but how much should we believe that?
If we believe that black holes do exist to a sufficiently large degree of certainty, when did it become reasonable to believe that, after what events?
I suppose I’d say that without astronomical observations showing accretion disks and gravitational lensing without emission within an event horizon, the existence of black holes would be theoretically justified by general relativity but we wouldn’t be able to make strong statements about GR holding in such extreme conditions.
Yeah, and if one wants to be really sure, one needs to look at raw data a bit oneself (every time I do that, I am usually taken aback by how noisy those data are, and how it must be difficult to interpret them conclusively, and how I have a very powerful built-in bias to trust the reports on experimental data and on what those data mean, and that I should try to keep updating towards higher uncertainty in order to counter my built-in bias to trust the reports).