I actually liked the movie. Great writing by Andy Weir but The director cannot stop indulging in his his luck of having a good script. The best thing about the movie is Matt Damon , he is sweet,pleasant to watch and such a great actor. What I dislike about the movie is turning one of the important character Venkat (book) to Vincent n the movie, he says in the movie that his mom is baptist, what is so special about that and what is not special about other religions that he is undergoing a conversion in the movie?Hindus are accepting to other religions and have shared Yoga and meditation to the world, so doing a yoga, meditation and even eating spices the Hindu way to save yourself from Alzheimer's is pretty OK, but it's very important to not show him as a normal hardworking and peaceful Indian. Hindu -Indians have contributed to welfare of western society, they come to US legally,, they pay high taxes and work hard as researchers or Engineers but the Indian in the movie had to be portrayed as a Christian and why is that done especially when the original book had him as a normal Hindu Indian? Makes me doubt the authenticity of portrayal of NASA which like all institutions of USA are unbiased and based on merit.