I agree. He was a little disjointed. It may have been his first presentation though as well. AS far as the chlorine tabs go; I dont see that as being a cheap alternative. If one purifies 1000 gallons of water, and you have a jug containig, say, 200 of them, thats about enough to purify your own water for quite a while. When a bottle of tincture of iodine costs $3 or so, you get a MUCH better deal on that.