I keep finding there’s more to say about the underground stream before I move on with 1940s science fiction.
One thing I’m particularly coming to appreciate is the extent to which the underground stream functions as an altered state of consciousness. It operates out of its own strain of dream logic that has little in common with the formal premises and conclusions of the conventional visions. It seizes hold of the imagination in such a way that works produced under its influence often display a strangely hypnotic quality.
It is also like dream and intoxication in that we may forget its insights when we return to a more rational state of mind, only to recall them instantly once we are back in the dream. This is why there is typically a direct continuity of attitudes and assumptions from one period when the underground stream is prominent to the next.
There were, for example, multiple links between the fantasies and mythic speculations of the 1940s and the birth of the creative imagination vision at the end of the 1960s. Similar affinities tie the most utopian dreams and most radical works of imaginative fiction of the 1980s and early 90s to the present day.
The interplay between the dream states of the underground stream and the intellectual formulations that reach their culmination in every dominant partnership also appears to underlie the recurring four-phase sequence of the cycle of visions.