Jonny_trigonometry said:
Is this the objective truth? If so, then you should be able to objectively prove it.
Again, prove it absolutely. Subjectively it makes sense, but not objectively/absolutely. Objectively, we don't know if that is correct, it's merely a possiblity. You require a belief in order to conclude one way or another.
I think it is not even a logical possibility for the universe to not exist. However if it would have been the case that there was not a universe (a state of 'nothingness' - no time, space, matter) such a state would be a definitive state (ie there would not be any other state either).
In so far to say that the universe objectively exists is even meaningfull. One could also claim that wether or not the universe objectively exists is not meaningfull and/or can not be verified, given the lack of possibility of an outside observer.
I can say that an apple exist, because I have the apple as object, and I am an object for the apple. Therefore there is an objective relationship between me and the apple, and it's objective status can be verified.
However this is not the case with the universe, since no objects exist apart from the universe (by definition).
(universe is all of reality)
How do you conclude this unless you have absolute knowledge of the geometry of the universe? You're simply concluding on one of the possibilities, which requires a belief to do so.
The assumption is that it has no boundary or edge. This is not exactly the same as infinite, since one could think then the universes is the 3 dimensional equivalent of a surface on a sphere (which is then just one of many assumptions, like extra dimensions, etc.).
Since there is no absolute knowledge of the geometry of the universe, it is assumed the geometry with the least assumptions (no boundaries or edges, no extra dimensions or curvature), at least I guess it would take the least amount of belief.
It actually fits the data best (almost flat), although we can't exactly verify anything beyond the horizon.
If one would need to make a guess about the size of the universe, not knowing anything about actual data and special geometry or so, I think anybodys guess would be that it would be endless, because anything else assumes other circumstances (having a boundary or curvature).
But acc. to current models, the universe can be spatial infinite in different ways. It could mean a finite size expanding space with such a rate of expansion that one could never catch up (even when traveling the speed of light) with the farthest parts of the universe.
It could mean an infinite and expanding space.
Or it could mean a multiverse universe in infinite background spacetime.
Or it could be the model of M theory brane cosmology.
This also requires a belief for such a conclusion. Objectively, we don't know the answer. What if brains are like radio receivers? If you didn't know better, you'd conclude that there is a guy inside the radio, but you know that the guy is in a radio station far away, broadcasting a signal which the circuitry of the radio can detect since it is tuned to the right channel. I'm not saying you're wrong, because I can't daftly assume I know better (it would mean that I think my belief is better than yours, which I don't).
What would be different? In both cases you need a brain. You perhaps don't know that the thinking process originates in the brain but in any case there would not be much thinking without a functioning brain.
Besides the knowledge about the brain makes this a very likely conclusion.
Just a receiver would in any case not be sufficient, the brain would then also have to be a sender. We have input and output to the brain.
What is the possibility of that any way? We can have that level of certainty that such a weird possibility is not the case, we would be all robots.
Where would the receiving/transmitting station be?
I hope you don't think it a wild guess that I do not consider that a likely case..
And I don't understand exactly why you would even need to consider this, because it seems to me pretty obvious that such a case would entail far more unfounded belief then not assuming that. If one takes all such cases into consideration, one may pretty well say that anything you state about anything is a belief. But then nothing is a belief. A belief is just making a not well founded assumption about something. So to assume that one's brain is a transmitter of radiosignals seems to me entailing belief, not the other way around.
Also for the size of the universe. If not known (and assuming euclidean space), would a guess of a finite size not entail far more belief then assuming that it didn't and was infinite? The reason for that being that when assuming it would be finite, one assumes it ends somewhere, there is a boundary. But that is pretty much a belief assuming that there is then not.
Also for the geometry, when not known, assuming that is non-euclidean is less founded then assuming it is euclidean.
Any other choice is a belief, and if all possible choices would be a belief then none would be a belief.
To make things more clear, you mean to say "objective reality", because the reality I perceive isn't limited to the physical world, because I can sense things beyond my five physical senses, such as happiness, sadness, love, hate, hope, fear, anxeity, etc. All these things exist in my subjective reality, and they are subjectively true for me. With that clarification made, I agree with you, since to me, you're only speaking about the physical world.
OK.
I don't agree on some of what you say are facts. They are possibilities, much of what you argue isn't objectively true and requires a belif in order to make such conclusions.
As stated before, any other choice of something that is not known, would also be a belief.
Such as the claim that the universe is infinate, and will and has existed forever; and that a mind must exist in space-time in the form of a brain.
As argued, and given the fact that no objective knowledge was available, any other possibility would require more and less well founded belief.
When you say "we", you can't mean everybody in the world, because your claims aren't objectively true. Your claims are true to you, since you've personally experienced the things that give you this hunch.
More like an excercise in deducting from a position in which you have little or no knowledge about things some knowledge.
Yes, no matter how much you believe something to be objectively true doesn't make it objectively true. You say that minds don't depend on the world, that is enlightening. Wouldn't it imply that a mind doesn't depend on the brain, since the brain is part of the world? Or do you mean reality in general as perceived by an awareness, including the many facets of thought and emotion, which don't really exist within space-time?
Where did I say that minds
don't depend on the world? Quite the contrary, the mind is dependent on the brain, etc. and not vice versa.
Without a physical working brain, there is no mind, and without a world you were born in, you would not exist in a mindfull state neither.
You're very convincing, but that's all. Why do I get the idea that you're trying to make me believe what you believe? You may not be aware that you're not being completely objective in your arguments.
It seem to me the only logical and consistent conclusion, requiring the least unfounded assumptions. Maybe not impossible to draw other conclusions, but far less likely.
The logic in this argument doesn't work. You say that since the world exists, and people don't live forever, that people's beliefs about the world can't be absolutely true. Sure, they aren't objectively true, but that doesn't imply that they aren't absolutely true, since objective truth is a subset of absolute truth.
Ok. But that is more things like arithmetics and so.
I was referring to knowledge about the fundamental nature of the world.
Because what you argue aren't objective facts, they are what you believe to be objective facts. There is a difference. What you say may be absolutely true, but it may not be absolutely true, we just don't know right now.
It appears to me that at least the flatness of the universe is more or less an objective fact.
The "size" of the universe is measured as the horizon size, but some well founded arguments exist is that the universe is at least several magnitudes larger as that.
And also in some well founded models, the universe would be conjectured to be infinitely large.
About the infinity in time, I think the position held that the singularity was a point in which the universe started is nowadays not considered a valid model.
The best guess science gives I think is that inflation is possible past time eternal.
There is no objective way of ever knowing that the universe is infinite in space or time, I guess (how at all could that be really known?). Although the past and future infinity in time of the universe I think is almost impossible not to assume, since how could it begin or end?
A start from a singularity - although it's theoretical existence can be well founded in GR - is at the same time something not to expect physically because the physics laws are known to break down there, and can therefore not be assumed to be a real physical state the universe was in. Infinity of energy density, etc. as required, are not considered a possble physical state. There is however nothing in physics that dispermits infinity in time, and looks to me almost impossible not to be the case. Arguments as that an infinite amount of ellapsed time are impossible (as argued by a kalam cosmological argument) can be shown to be incorrect, since any measure of time on an infinite time line is still a finite value, no matter where you place the points, and since you can always place them further apart, in effect time is infinite.
In your case, you have changed uncertainty with certainty. In your mind, you are certian, but that isn't being very scientific.
Yes, but I would think that is not in every situation a requirement.
Best guess and well reasoned using the least necessary amount of speculation sufices sometimes.
Again, you reiterate your belief that the world will always exist. Even if that's the absolutely true nature of the physical world, it doesn't support your claim that there is nothing else.
An eternal infinite world already contains everything, I suppose.
What else did you have in mind that could be that is not already contained in everything?
You're a believer. It takes a belief to be certain about things like this.
But when I follow your reasoning, everyone is a believer. Because whatever choice ones makes on that issues, it always ends up being a belief.
But maybe it is an essential feature of how our brains are wired and because we are natural beings. Even animals have beliefs then, because they base their actions on insufficient knowledge.
Wasn't this confirmed sometime in brain studies that our "logic gates" also try to fill gaps or make certain assumptions when insufficient knowledge is available?
Look. I'm not saying that you're absolutely wrong. I'm saying that you're objectively wrong. As soon as humankind's knowledge and understanding confirms your arguments, you'll be speaking objective truth, but until then, you're speaking your own subjective truth. I don't have a problem with your beliefs, in fact, I agree with some of them, but I do have a problem when you claim them to be objectively true. They are your beliefs of what is absolutely true, and they may or may not be absolutley true; humankind just hasn't become sophiscitcated enough with our knowledge and understanding in order to confirm or deny your claims. Do you understand what I'm trying to say about the difference between subjective, objective, and absolute truth yet?
Yes.