the wanderer and his shadow

In Charlie's new book he takes a stab at interpreting the intro and outro to Nz's The Wanderer and His Shadow. Does anyone else out there care to share their take on it? I've thought about it a few times before but I'm fairly baffled. My guess is it's one way of interpreting Nz, and not "the shallow reading" and maybe a different type of false reading but somehow he comes to grips and agreement with it and promotes a collective effort with the help of the shadow.

But really I know nothing and even that I don't know well (I'm more of a dime store nihilist). Any insights would be welcome.