The story is a science fiction - meandering through psychological gorges and therefore often times slow - thriller. So, it might be helpful at times to watch and read some of the material offered to give some background to the more theoretical parts of the story.
This chapter has a preoccupation with Space - Time and gravity. I would love to tell you that I could explain it to you, but that would be a complete lie. I have managed to gain a greater understanding, but not enough to fully explain it to anyone including myself. However, there are better people than I who can start you on your way. And, as for the question about the gravity constant, I will let better people than myself deal with that question.
Also, I would like to stress that I don't fully understand and therefore don't have an opinion on any of these subjects. As a writer, I find it easier to be equivocating as it allows my flights of fancy more room to maneuver in the world of science fiction. I mention this because the second last link is to a site run by Rupert Sheldrake and he is controversial to say the least. I have also put a link in for those who want to more about him. I really can't say what I think about his theories, but he, along with his friend Terrance Mckenna, are instrumental for developing other characters later in the story.
PBS Space Time - Are Space and Time An Illusion?
PBS Space Time - Is Gravity An Illusion?