Jimmy had a lot of things on his plate. He was worried for himself, and for the people around him. He was considered by the people as the unofficial tribe's chief, on account of all of the contributions he made recently, which was a great responsibility, as he was responsible for everyone's well being. It was stressful, and half of the time, he thought of ways regarding how to make everyone's lives easier.
It wasn't like he wanted to invent electricity, but he had to bring some of the simpler knowledge of the world he came from, to help make everyone's lives a bit easier, or even a lot easier. He didn't know for sure yet, but other than strengthening the tribe's defenses, he figured that the most effective task right now was to find salt deposits.
