In the positivist tradition, it is common to “dissolve” certain ideas as being meaningless, and not worth further consideration. The statements corresponding to those elements of our mental experience, that are neither identifiable with verifiable facts, nor are derivable using logic, are considered nonsense. Within this framework, we can classify the content of our thoughts into meaningful and meaningless aspects. To which of these categories do the statements about 'qualia' fit? Is there no hard problem of consciousness, from a positivist perspective?
Consider the statement, “I am conscious of the blue sky, now". This does not appear to be a meaningless sentence. How does one verify it? Someone could be put in an MRI machine while having that experience, and be shown the corresponding brain region activations. Does this count as a verification? If so, it is of a different kind than the usual, because ordinarily verification involves direct apperception of the object the experience is based on or about.