When it comes to the realm of the mind, there are no illusions; in the case of consciousness the appearance is the reality. There is no outside, no criteria except the social consensus: that is how one fells most of the time and sees most of the time, due to so and so social determinants, which then, as Foucault has shown, become bodily, chemical and physical. If “everybody” was on acid (like the psychedelic cultures of the Amazon, the shamanic cultures of the past) then that would be the reality. There are no absolute physicals out there, states of consciousness and states of reality are completely arbitrary - that is what so uneasy and frightening about psychedelic exploration; and what is so pathetic about philosophers, phenomenologist, and philosophers of mind is that all their “work” is done from a normal (i.e. arbitrary) state.
Bergson’s whole philosophy is based on the intuition, that there is only a distinction of degree between so called perception, and the things perceived, no fixed nature to see for once and all time - there is not on one side, the (brain) representation, and world (as represented) there is only a continuum. For Bergson, the universe is a collection of images, and the brain and body visions are also images, objects as much as any other objects, images caught within an infinite series of images; no absolute centre can determine the criteria of the world or the ultimate perspective. So affecting the brain chemically is not an illusionary praxis, but creation of more images within an infinity of other images, increasing the ad infinitum perspectives of the cosmic kaleidoscope: the universe twists and increases its images at every turn…
