That's better.
No need to worry, though. Our belief in the reality of the world out there is truly unshakeable and will always be stronger than any of our theoretical views.
Still, you haven't really provided any objections to my specific arguments. You've just reaffirmed your conviction.
Also, you didn't even try to show how my views would really be nonsensical.
I have been airing my views on this forum for ages now and I still haven't seen any convincing rebuttal.
EB
The existence of models requires the existence of something they are attempting to model. It doesn't mean this second thing is what we think it is (made of stuff, out there, etc.) but it's a thing and not just a contrivance, otherwise the fact that some models are very predictive of experience while others are not would be impossible to reconcile.
So, according to model A, I anticipate having experiences x, y, and z, but not p, q, and r. The experiences I end up having are what decides which model is more accurate, where 'accurate' just means 'predictive of what I will experience'. Many such predictive tests, across many vantage points, are what establish a model as true. All the talk about whether or not there is an outside world is just playing around with words; whether the cause of my experience (upon which I base my support or rejection of a given model) is a vast external reality or a coherent illusion of such, the answer to my question of which model to favor will still be the same.
That's all having knowledge needs to mean, it doesn't have to imply something like perfect certainty of a metaphysical sort. To know that the capital of Rhode Island is Providence does not require any background assumptions about whether Providence is a physical location somewhere in spacetime or a simulated environment created by a computer. I just predict that when I look up the capital of Rhode Island, I anticipate that it will say Providence. Multiple confirmations of this prediction and its coherence with other predictions that are similarly extensively corroborated make me confident that it is true, and the word 'knowledge' is just a label for my confidence.
That's clearly not true.
First, it's just obviously untrue that "
The existence of models requires the existence of something they are attempting to model". Hallucinations are straightforward examples of models that don't have any reference whatsoever.
Second, what is it you're supposed to know when you say "
Providence is the capital of Rhode Island"? My guess is that very nearly everybody does mean the metaphysical view that there's a whole physical world out there with a big planet Earth wholly made of the stuff we call matter and somewhere on it, an expanse of houses and streets and an administrative and political body to manage and control things around the area. Even me, it's what I would mean by it.
Third, past predictive success doesn't guaranty future predictive success. We all have the experience that we can't trust experience. That's our experience. Including for scientists. If you trust experience, you should know you should distrust experience. You know, "
so far so good, so far so good, etc..."
Fourth, obviously, success in predictive tests gives us confidence and confidence leads us to declare our model true. Yet, it's not because we think and say it's true that it is.
Fifth, how could you possibly know that your second-level impression that your first-level impression that experience confirms your model is proof that there's something out there that conforms to your model? I would grant you that it can look very convincing and there's nothing else to do in fact than go along with this impression. Yet, I really don't see why it would be impossible for this impression to totally imaginary. If it is, what's going to stop you wrongly believing it's true?
Sixth, my point here is that all our ideas about the world out there are impressions, including our impression that prediction is confirmed by experience (whenever it is) because the idea that prediction is confirmed by experience is itself an idea about the world out there. So, the flaw in your argument is to assume you know something about the world out there, i.e. that some predictions are confirmed by experience, and then you infer that you necessarily know something about the world out there. That looks very circular to me.
Of course, our impressions might well be true. I'm not denying that. In fact, I can't stop myself believing that. But, it's not because that's what I believe that it is true.
And it's also not because the impression I believe is true is indeed true that I know it's true. The impression I believe is true may indeed be true without my belief magically morphing somehow into true knowledge.
Seventh, what's wrong with just believing? We can believe we have good reasons. If we do, we will usually act accordingly. That's certainly what I do myself and I believe it works. We also believe that when we have good reasons we can convince other people and that they will act accordingly. And so life goes on in an all-too-believable world. What's wrong with this belief-based model? What's missing that would somehow require us to claim knowledge as necessary?
8th, just give me one instance of something we both know is real?
EB