Certainly going back to Sherlock Holmes we have a tradition of forensic science featured in detective stories.
Hitchhiking was such a pure form of existence. You'd wake up in the morning, and you'd have no idea what your day was going to be. And that's something I've never been able to shake. I loved that.
It's easier to change what you do than people think it is. If you don't change, your field changes around you.