More than a few years ago, I went through a "spelunking" phase, cave exploring. Most people have misconceptions about caves, that you can just walk around looking at stalagtites and stalagmites, and when you get ready to leave, you just casually walk out and resume their normal lives. In reality, caves are like Charlie's crate; usually very easy to get into, but sometimes very difficult to escape without outside assistance. And have you ever noticed…