You probably think of piranha when thinking about the Amazon river. We were on a fishing expedition for piranha. My wife, the pilot, and our guide all caught piranha -- mostly red bellied, but a couple white bellied. Above is my one catch. It is a sardine (about 10", 25 cm). I'm amused, or puzzled, or something. I'm happy about it. It's a reminder of the fact that the world is more involved and weirder than you might think. And a reminder than if there's weirdness to be found, I'll be the one to find it.
Managing, well, I'll go back to a story from college. A friend of mine was a highly talented computer science major who went from starting his bachelor's degree to finishing his master's in 4 years. While we were room mates, he did a group project with the other two top students in the class. If technical skill were the only issue in doing a technical project, this group would have done by far the best. Instead, it was a mediocre project. That's when he, and I by contact, developed an appreciation for good managers. One of their skills is to get the best out of a group of people. So that's my aim.