Rodrigo Acuna
Rodrigo Acuna asked Andy Weir:

the science in the book was very impressive, how much time did you spend corroborating your facts?

Andy Weir I researched on and off throughout the writing of the book, so I don't have a number for how much time was spent on research vs. how much was spent on writing. But the total process took three years.
Andy Weir
61,352 followers

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