The Doors of Perception So Often Swing Shut!
Would it be such a terrible thing for us for that door to swing open, and leave it open? Not merely ajar.
I'd think in a sufficiently safe world you could probably live in a pseudo-dream state, where everything was more concept than reality, somewhat like a mild persistent psychedelia or psychosis.
Which is effectively what we live here and now, the reasonable concentrations of active molecules in the sober mind filter more than a mind that has had certain doors opened or closed in slight by an unexpected neurotransmitter or a brain defect (in the less fortunate), but the brain doesn't change the information as it takes it in, the information is the same. The obscurity remains, between sober and psychedelic, between balanced and psychotic.
But the conscious mind is useless without memory and the brain has a memory limit. Making psychedelic states feel transient, even thin as though a veil has been lifted or lain over for a time, only to be shifted again soon after. As there are typical