I was going through goodreads yesterday and came across my review of The Martian there. I gave it 5 stars because I use what I understand is the Roger Ebert style of rating. The Martian is imperfect, pulpy and at times a bit over sentimental. But it succeeds at exactly what it sets out to achieve. It isn't Dostoevsky or Proust but it isn't trying to be. It made me laugh, kept me engaged and turning pages. It made me think, this situation is impossible but if it was possible then this is about as realistic as I could expect a novel to portray. In exchange for suspending my disbelief it gave me an enjoyable diversion.

All that to say, if Project Hail Mary is equivalent to that, it is going on my to read list.