Wow. The hype around this book is no joke - and it deserves it. 
 I will openly admit this, there is a lot of math involved, and some of it honestly just went over my head. But that's okay, because rather than slow me down, I continued to plow through this book. What I loved about it was that you could tell that Weir put a lot of time and effort into his research, and genuinely cared about making sure parts of this book made sense. Everything about this book surprised me, and my doubts dwindled after the first few pages. 
 The narration was absolutely grand, and so so so real. Mark's journaling and his often hilarious puns were a marvelous insight into his character. This book didn't feel extremely unrealistic, like some hard-scifi books tend to be, and the character of Mark Watney was both funny and endearing. I was definitely laughing out loud at many of his lines. 
 Overall, this was a well written, thrilling, deeply thought out, and engaging read. I thought I wouldn't make it halfway through this book, but I was wrong, and I would highly recommend this book to literally everyone.