*The Martian Wikia*
https://the-martian.fandom.com/wiki/The_Martian_Wikia
A fansite devoted to the novel and its related film
The Question and Answer section for The Martian is a great resource to ask questions, find answers, and discuss the novel.
• Watney's sense of humor.
• Watney's back ground in science.
• Watney's will to survive.
I will need to look further for your quotes.
I'm not familiar with the science of it but Check this out:
https://news.unl.edu/newsrooms/today/article/how-realistic-is-the-martian-husker-experts-weigh-in/
Watney notes that he is alive, and he acknowledges that it will be four years before a manned mission is launched to rescue him. He also determines that he has almost enough food for a year..... possibly longer if he rations carefully. He then...