make fire with water!

Wow... I know that I like weird things, but this article is just way too cool to be dismissed, how come those "make fire with Ice Lense" people never thought about WHERE am I going to get a piece of clear convex ice easily while camping (unless I am in the arctic?)...

This is way easier and much more pliable, and RE-USABLE! Don't even need to bring a magnifying glass or lighter!... Though dry tinder is needed to start the fire within a reasonable amount of time. ^_^