GR translation: crossover point

[Joseph Tracy]

Some time ago a crazy dream came to me
I dreamt I was walkin’ into World War Three
I went to the doctor the very next day
To see what kinda words he could say
He said it was a bad dream                    B Dylan

Hired to  dream Fascist secrets, Pirate time travels a little, 
investing in, then trying to divest from fascist futures 
Seeing Zhlubb as pure uber organ has him reeling 
not quite as funny as it sounds
like when the air smells of gas and the sky becomes 
the place where the rockets come from

My sense of Pynchon's crossover points is that they are about the connections between worlds, in another place he scries a message in semen, itself nature's dream of the future, the place where one genetic world crosses over into another. I see P dividing literature into 3 spheres, for Dante it was pugatory, hell and heaven further subdivided, but in Pynchon it is Myth/Fantasy ,plausible fictive, and historical/actual.When P leads us to Byron the Bulb ,Tarot myseries,  down the toilet, or connects us to the memories of the preterite encoded in coal tars, or to encounter a giant adenoid, we are in mythic territory. Dreams are a classic crossover point in Jungian process connecting to the collective unconscious.  But by often having places,machinery ( time machines, trains, skyships),chemicals or actual passages underground as the crossover point, P expands and reifies the notion. 

On Dec 10, 2011, at 3:17 AM, Mike Jing wrote:

> P14.40-15.8   At last, one proper Sherlock Holmes London evening, the
> unmistakable smell of gas came to Pirate from a dark street lamp, and
> out of the fog ahead materialized a giant, organlike form. Carefully,
> black-shod step by step, Pirate approached the thing. It began to
> slide forward to meet him, over the cobblestones slow as a snail,
> leaving behind some slime brightness of street-wake that could not
> have been from fog. In the space between them was a crossover point,
> which Pirate, being a bit faster, reached first. He reeled back, in
> horror, back past the point—but such recognitions are not reversible.
> It was a giant Adenoid.
> 
> What exactly is the "crossover point" here?