Carson
Carson asked Andy Weir:

First I'd like to say that I absolutely adore your writing and think that your writing talent is to die for.... thank you for answering all of us fans' questions! I would like to ask you what, overall, inspired you to write the Martian and what kept you inspired to continue writing and finish the book? Again thank you very much for answering our questions and thank you for writing this excellent book!

Andy Weir I was imagining how a real-life manned Mars mission could work, and how they would deal with any problems that cropped up. As I thought of more and more possible problems, I realized it would make for a good story.

My main inspiration to continue was my core readership. I was posting it as a serial to my website, one chapter at a time. Reader feedback and emails really motivated me to press on.
Andy Weir
61,361 followers

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