There have been a number of interesting theories advanced about life on Mars, but the intriguing picture of the world of Longtree and Channeljumper in its infinite variations, tonal and thematic. The Mars of these two is an old culture, old and finite.
The underlying struggle, if you look into the characters' hearts, is terrifyingly real and human--the kind of struggle so many of us go through. But Sam Meecham was lucky. He not only got what he wanted, but something he hadn't realized he wanted.
Working on the theory that you can skin a sucker in space as well as on Earth, the con team of Harding and Sheckly operated furtively but profitably among natives of the outer planets. That is--until there was a question of turnabout being fair play in a world where natives took their skinning literally!