Poorly written. I mean really, really bad. It is evident to me he couldn't carry a coherent train of thought, just rambled onto the page, and very occasionally inserted a touch of sci-fi to keep his long term readers happy. Mostly an ode to the world as he would have liked it to have been, filled with endless sex and incest. I really like Heinlein, Stranger in a Strange Land is one of my all time favorites, but he is so far off his game here, it is quite painful to read. I really don't understand the 5 star ratings for this one, I would give it zero stars if that was an option.