In a mental world where are all referents are ideas, no idea can be proclaimed either true or false against the will of any inhabitant. All possibilities remain, and will always remain, perennially and continually viable.
Only facts disrupt ideas, and one need only develop the idea that facts do not matter–for example, that they are “manufactured” by an idea, like that of “white males”–do remain free to imagine the world in any way one desires.
One remains free to hallucinate, in other words.
I saw this reality of course many years ago, but have never, I don’t think, put it quite this way. But it is the idea behind Perceptional Breathing, as I put it, in which perceptual attention regularly alternates between ideas–in-breath–and particular and facts and pure experience in the out breath. You need abstractions and you need observations. You need both.