I'm sure everyone has hear that one is none and two is one. That would probably be the best advise I got. If you know me I love multipurpose tools and having more than one way to start a fire. I also have back in food to my back up food. I believe in multiple ways to getting and growing food. I highly recommend everyone having a 25 year shelf life food as a back up to your back up. 1 is none and 2 is 1. Please add to this comment.