What are the most surprising things–facts, examples, events, behavior, explanations–you found while reading Gonzales’ Deep Survival?

Perhaps make a list or focus on one thing, and then explain what is so surprising and, possibly, what that surprising taught you in some way.

So, please share something in and about Gonzales’ Deep Survival that you found surprising in some way.  Explain what you mean, and perhaps explain how thinking about that quality of surprise has adjusted your thinking, if it has