However , the gap between the ruling class and the workers is very strong and reminiscent of the early capitalism , with workers living in underground corridors near their machines .
Arriving on Mars , they discover that the planet is inhabited by an advanced civilization .
The gap between the ruling class and the workers is very strong and reminiscent of the early capitalism , with workers living in underground corridors near their machines .
Arriving on Mars , they discover that the planet is inhabited by an advanced civilization .