It’s interesting stuff, sure, but it is not sufficient to give me pause because humans have looked in the brain and have seen no images or anything that constructs images. — NOS4A2
Either you believe we literally take images into our heads from the outside, or we have absolutely, 100% without a shadow of a doubt, seen, in the brain, the infrastructure for creating mental images/representations. One of those needs to be true (but this doesn't determine an IR/DR perspective. It just is the two options available based on the fact that we aren't the images we 'see'). It would be helpful to know which you think is the case..
If humans don’t see light why do we have lightbulbs? — NOS4A2
I'm not quite sure what work this question is doing? Light provides the eyes with data. Without the light, there is no data. Though, it does seem we can literally see light in the form of photons. Not sure that changes anything - the point is that without photons bouncing off an object, we wouldn't become visually aware of it. If that doesn't give you pause, I guess I feel like you're not sufficiently in touch with the problem. Onward...
If I’m having hallucinations I’m going to get a second opinion — NOS4A2
How would you know you were having an hallucination? How would you know the second opinion was 'accurate' and as against what? Consensus? That's fine, and also what I would do - but it's not supportive of a DR position.
While you and Michael claim there is the proverbial veil blocking us from direct access to the world, I say that the veil blocks your access to the goings on of your own brain. I say this for the simple reason that the senses point outward. — NOS4A2
This is quite clearly incoherent: If we are veiled from the actions of our brain, we have no
possible access to the outside world. We do not see things in our eyes - our eyes literally ships electrical signals to our brain. Without hte brain there is no possible mental image (or whatever you'd like to call it). Eyes (i.e the sense organ) objectively see/present nothing but "code" for lack of a better term. They do not contain or receive
images. This much is an empirical truth and not part of the philosophical disagreement - which is why it seems to me you (and others) are not quite coming into contact with the facts prior to trying to determine some epistemic situation (there is a big spanner to this approach, but its not hard to overcome).
Again, this is why we have sophisticated imaging contraptions, specialized doctors, and brains in jars: so that we can better understand what is occurring in there. — NOS4A2
A clear mistake. Our senses are
still our only access to any of this. None of it brings us closer to the objects we study in the epistemic sense. If there's a veil in the sense you want to call it (we don't), then that's present when you look down a microscope or interpret dye results etc..
claiming there exists things in the head that cannot be proven to exist, but because you believe you have a superior epistemological grasp of what is occurring behind your senses rather than in front of them. — NOS4A2
I don't even think you're in touch with the competing view point.
There are no "objects" in the head. That has never been claimed, so let's be clear: The images we see are there, whether or not you claim they are generated by the brain or not. If you're claiming they are not generated by the brain, you have a world of philosophy and neuroscience to battle against and an incredibly uphill battle it is, to explain how it is the apple on my table gets into my head(read: experience, i guess, noting hte empirical facts of perception).
Banno has understood this and made a different, more successful argument. I'd look there.
I do get the impression you both feel that scientific discoveries demand that we should accept the metaphysical picture that indirect realism seems to draw. — Richard B
Not quite, but it gives a default understanding which we would do well to be skeptical of displacing on philosophical grounds imo.
As indirect realism retreats into private first person experiences, science needs to find consensus in the public realm. — Richard B
This is an extreme error. Science doesn't 'need' to find anything, whatsoever. It follows a method and 'come what may'. In this case, we now understand that we do not receive images from without, but light which is turned into electrical signals, which go the brain - and then we have work to do. This isn't controversial. The fact that humans have private experiences is a fact, and not one which discussions of perception can do much for. There is no way for me to have your experiences.
If hydration directly processes H2O, why can't we say perception directly processes light? — Richard B
Because they are in no way similar processes, physically speaking. Different forms, substances, substrates, organs, results etc... It's a really bad analogy, is the reason this probably was not picked up.
You might say, we should keep "realism" and drop "direct/indirect" and understand we are causally embedded biological organisms whose process of perception supports interventions, coordinations, and manipulations of our environment. — Richard B
You might, but this would be to entirely miss the point of the question (which i think you're entire point about science does) by completely and utterly ignoring the fact that there is no answer anywhere in this discussion as to where we are to consider factually mediated perception direct or indirect. This is a matter of comparison and "the best we can do, in this particular realm where language is important for stability".
You're not even wrong. And I should stress this more clearly: When practicing science, with other scientists, consensus is king. That says nothing about the state of DR/IR theories. That we have shared perceptions (assuming everyone's system in a given thought experiment works right isn't controversial either). If DR is 'true' (or, the best description) this would be how it happens. If IR is 'true' (or, the best description) then this is how things work.
Neither theory runs against reality. That's why it's such a tense question. I understand the temptation to say what you're saying, but it just doens't touch anything. You're talking about standards and method. The thing Michael and I are, at the least trying to get you guys to deal with properly, is the fact accepted by both camps that there is no possible way for the apple on my desk to be in my head, and it snot possible that my mind is included in the objects it perceives. So there's gap - simple as.
That is, if I speak falsetto, you can say that is not my "real" voice. If you want to say that my real voice is what you hear when we're next to each other talking, but a recording of my voice isn't my real voice, that's fine. But none of that suggests there is this metaphysically true voice that can be meaningfully (and by "meaningfully" I mean that can be identified and discussed coherently) identfied.
Identifying that "real" voice is impossible. Is it the vibrations, the way you hear it, the way your ear drum vibrates? Is it still "real" if through helium? — Hanover
Hmm, I got you. I don't think this is doing a lot, because I can simply say your examples require other modifiers "speaking voice" in the first, or "tessitura" to be more technical.
It seems to me there is nothing missing or hard to grasp (i.e to talk about) in these uses. But i recognize 'use' gives meaning to things - I just, personally, hold that htis is an absolute cop out. If there were
truly the way words 'worked' then no words would have shared meanings because anyone's personal use would be valid. But we correct each other. So there is some epistemic primacy to some uses, and I think thats far more widespread and meaningful than a lot do.
What you
do call the difference between hearing your wife's 'real' voice when you're two feet away, and a recording from 2022 when you're on another continent?
But none of that suggests there is this metaphysically true voice that can be meaningfully (and by "meaningfully" I mean that can be identified and discussed coherently) identfied. — Hanover
This is exactly my intuition and experience. I can't understand what you think leads to this ambiguity? Either i'm hearing your voice, or a recording of it (which a phone call technically is). Nothing weird or airy fairy there, to me?