The Martian

Weir's novel follows astronaut Mark Watney, left behind on Mars after his crew evacuates during a storm believing him dead, and his attempts to survive until a rescue that is years away. The book is constructed as a sequence of engineering problems: producing food, producing water, generating power, communicating with Earth, and travelling thousands of kilometres to a rescue site.

The solutions are worked out explicitly with the arithmetic shown. Watney calculates his caloric requirements against his food supply, converts hydrazine into water by burning hydrogen in a controlled reaction, builds a farm in the habitat using Martian soil and crew waste, recovers a defunct probe to establish communication, and modifies a rover for a long overland journey. Weir did the calculations himself and the majority hold up, with acknowledged departures including the opening storm, since Martian atmospheric pressure could not produce winds capable of tipping a vehicle.

The method the book illustrates is decomposition of a survival situation into individually solvable problems, each with resource accounting attached, and acceptance that solutions create new problems. The recurring pattern is that a fix introduces a failure elsewhere, which Weir uses to structure the plot.

The characterisation is thin and the humour is constant, which some readers find grating. The NASA and Chinese space agency sections are weaker than the Mars sections. There is no thematic depth beyond the survival narrative, which Weir did not attempt. It is read in engineering and startup circles as a demonstration of iterative problem-solving under hard resource constraints, which is exactly what it provides.