After John and I went tromping through the jungle in the rain last week in search of the waterfall (which we found but which didn’t have any water falling, except in the form of rain on our heads), I noticed that my only pair of walking shoes had come unglued. Oh no, what to do? It’s not like I can just hop in my car (which I don’t have) and run to an outdoor gear store (which doesn’t exist here) or order on Amazon (which doesn’t deliver here). This is the one downside of living in a non-consumer-oriented culture. The …