I&#x27;ve yet to see The Martian, but have read the book and found it pretty reasonable for the behaviour of all characters, I guess the advantage of a book is that the author can describe the internal thoughts of a character much more clearly than an actor can portray on screen. Further while I&#x27;m not rocket science (I prefer rocket surgeon, thanks KSP), my understanding is that the science in The Martian was pretty solid the whole way through.