unduki wrote:
Of all the information there is to know, how much do you estimate mankind knows? 50%? 20%? 2%? .0004%?
Depends on what you consider to be information.
Assuming the cosmological principle holds and the rest of the universe isn't a giant hoax, then of
all the information (like the world line of every particle ever), 0%. Obviously. The universe is f*****g huge. Of all the
important information (like, say, all the interesting things out there that aren't just cold specks of dust, or plasma, or degenerate crap or singularities or whatever), 0%. Obviously. The universe is f*****g huge. Of all the
vital information, it's difficult to say, but we know enough to describe the way the universe works to a reasonable approximation (
only) for quite a large range of circumstances. I'm tempted to assign it a very high figure, but
on ne sait jamais.
Or we can consider information particularly relevant to us: mankind (as a whole) knows almost everything important there is to know - at least as far as things which are obvious to our senses go - about mankind at present, a good outline of humanity's immediate past and a reasonable outline of humanity's history for a thousand years back, plus a sketchy outline of humanity's history for ten thousand years or so and a very rough outline for a few million, plus a loose history of life on Earth and a loose history of the state of our solar system for a few billion, plus a loose history of the general state of the universe for fourteen billion ish. We have a reasonable appreciation of the important stuff in the solar system, a reasonable appreciation of the more obvious stuff that's near us in the galaxy and a general appreciation of our galactic neighbourhood, plus a reasonable but largely out-of-date knowledge of anything spectacularly violent that's been going on around us in the universe.
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