Sy Borg wrote: ↑October 30th, 2021, 7:34 pm Usually the idea of information destruction, or not, is framed around black holes.A bit of a tangent here, but as a scientific ignoramus I've never really understood what ''information'' means when spoken of in these ways.
In a series of breakthrough papers, theoretical physicists have come tantalizingly close to resolving the black hole information paradox that has entranced and bedeviled them for nearly 50 years.This perspective has always bothered me - the idea that no information would lost if you fell into a black hole. I am not sure why experts don't seem death itself to be a loss of information. If Middle Eastern mystics of the Iron age are wrong, then a huge amount of order in the synergy of body parts is clearly lost forever at death.
Information, they now say with confidence, does escape a black hole. If you jump into one, you will not be gone for good. Particle by particle, the information needed to reconstitute your body will reemerge. Most physicists have long assumed it would; that was the upshot of string theory, their leading candidate for a unified theory of nature. But the new calculations, though inspired by string theory, stand on their own, with nary a string in sight. Information gets out through the workings of gravity itself — just ordinary gravity with a single layer of quantum effects.
It could be said that, at death, an animal's body system is replaced by colonial microbial communities, but those communities were already busy, just that the overarching ordering consciousness is gone. Does anyone here know why the loss of life and consciousness are not considered to be a loss of information?
To me information isn't something which exists, it's an abstract, conceptualised way of describing things. So to talk about information being destroyed makes no sense in my interpretation. And I've considered it as a metaphorical way of talking about actual stuff, in that if something, a bicycle for example, 'contains' a lot of information, what is really being said is that a bicycle can be described in a lot of ways. More ways than its handle bar, or a particle which is part of the bicycle.
Using my understanding then, if a bicycle enterring a black hole has its information 'destroyed', what is really being said is there is nothing left of the bicycle to be described. But it is the bicycle which is the actual thing which is destroyed, not information (the possible descriptions of the bicycle which only exist in our minds).
So if there is nothing left of the stuff of a bicycle enterring a black hole, then a consequence is we have nothing left to describe. As opposed to me smashing up my bicycle in my garden, where the parts of it still remain and can still be described, but not in the exact same ways (eg part of a description of a complete bicycle is its location, which is now scattered, or when pressure is applied to a pedal the wheels go round - some informational ways of describing the bicycle have changed and some lost). And IT encodes and decodes descriptions in different formats.
I've kind of cobbled this understanding together from bits and pieces I've read. Is this about right? Or am I missing some significant understanding of what information means?