Smart, funny, but outdated. I can see why this is rated a classic.

Describing the plot is pointless, since the story is in the "and-then-I-saw-something-else" sci-fi tradition. It's a phantasmagoria, a gonzo extrapolation of what must have appeared in 1970 to be the limitless potential of mind-altering substances.

Of course, here in 2017 our understanding of brain chemistry is still rudimentary and it seems more likely that we'll be using digital means to create our illusory dystopias. As prediction, this book is probably a miss (we'll know in 2039!), but it's still an interesting artifact of its time.

It's a fun read, full of clever jokes and satires. At 150 pages, it's a quick one too. If you like old-school idea-driven sci fi, it's well worth your time.