What I have asserted makes sense with my definiions. If you are interpreting in terms of your own definitions....don't.
I'm trying to understand your definitions and how they're different from mine.
I think it is false by occam;'s razor, which automaticaly means it is meaningful, beause it it were meanignless I would not know how to apply occam's razor or anything else to it.
I see that for you "meaningless" is a very narrow concept. But does that agree with your stated definition? In what way is "there is an invisible/undetectable unicorn in your room" not "useless for communication"?
Also, can you offer a concrete meaningless statement yourself? Preferably one in the form "X exists".
What happens if a robot pain detector is invented tomorrow?
I can give you a robot pain detector today. It only works on robots though. The detector always says "no". The point is that you have no arguments why this detector is bad. This is not normal. I think we need to talk about other currently immeasurable things. None of them work like this.
In what way is "there is an invisible/undetectable unicorn in your room" not "useless for communication"?
Well, you used it,.
I can give you a robot pain detector today. It only works on robots though. The detector always says "no". The point is that you have no arguments why this detector is bad.
Its' bad because there's nothign inside the box. It's just a apriori argument.
(This post grew out of an old conversation with Wei Dai.)
Imagine a person sitting in a room, communicating with the outside world through a terminal. Further imagine that the person knows some secret fact (e.g. that the Moon landings were a hoax), but is absolutely committed to never revealing their knowledge of it in any way.
Can you, by observing the input-output behavior of the system, distinguish it from a person who doesn't know the secret, or knows some other secret instead?
Clearly the only reasonable answer is "no, not in general".
Now imagine a person in the same situation, claiming to possess some mental skill that's hard for you to verify (e.g. visualizing four-dimensional objects in their mind's eye). Can you, by observing the input-output behavior, distinguish it from someone who is lying about having the skill, but has a good grasp of four-dimensional math otherwise?
Again, clearly, the only reasonable answer is "not in general".
Now imagine a sealed box that behaves exactly like a human, dutifully saying things like "I'm conscious", "I experience red" and so on. Moreover, you know from trustworthy sources that the box was built by scanning a human brain, and then optimizing the resulting program to use less CPU and memory (preserving the same input-output behavior). Would you be willing to trust that the box is in fact conscious, and has the same internal experiences as the human brain it was created from?
A philosopher believing in computationalism would emphatically say yes. But considering the examples above, I would say I'm not sure! Not at all!