This is an epic, historic, buddy story that involves all of us. I'm not saying it is true but it could be. After all we don't know everything. We think we do, but we don't. Every day science is being rewritten. The dinosaurs were wiped out by a meteor, they were not wiped out by a meteor, they were already dieing off. Germs and viruses wiped out the dinosaurs or, no germs and viruses didn't, only half of the dinosaurs.
The history in this book is just as plausible. The story of stumbling upon archeological finds happens every other month in the real world and so it is in this story. People just jump in where they have no idea of what is going on or what could happen. Unfortunately for Bob he was either in the wrong place at the wrong time or the right place at the right time. Either way his life was changed forever. Bob would now say that he was in the right place and Carlos would say that Bob was in the wrong place. Nancy would have no opinion.
What would your opinion be? Who would you like to be, Bob, Carlos or Nancy?
Nanobots, DNA, earth changes, people changes. People chases, daring travels and constant danger are all in this story. And it all started for Bob because he couldn't handle the killings going on around him.
A combination of high charged action, scientific information, human wants and needs and the gains and losses for every choice we make.