The more you travel, the more you become aware of the different ways that people do essentially the same things like driving or buying a bus ticket or eating or shopping. One way isn't necessarily better or worse than another and some things just seem weird if you're not used to them. Like, where I come from, in the States, it’s kind of normal to smile at strangers. But in some other countries smiling can make strangers feel uncomfortable or even suspicious. And sometimes you see a way of doing something that seems much more sensible than the way you've always been used to and you think. 'Why doesn't everyone do that?' Like peeling a banana. So always used to peel it from the stalk end - probably you do the same, right? But in Nicaragua, which I visited recently, people generally hold the stalk and peel it from the other end. That has two advantages: you can hold the banana by the stalk and it peels much more easily from the other end, so you're far less likely to bruise the banana as you peel it. The other thing I noticed there was that a lot of people sleep in hammocks and they don't suffer nearly as much from back problems as we seem to in America; because they naturally sleep on their backs that way, which is the optimal position to sleep in.