I was thinking of getting a lawn sprinkler (special one) placing in in people´s roof get large tanks of water several i am talking very large and incline them upside down connected to a hose, let it run through people´s roof and all is needy is a device that dedects smokes...Then like one of those computer cameras and make the device that dedects smoke ring like a cell phone which will show a camera in the room and one can see if there is smoke and the person hits the botton so that the sprinkler stars activating....When they need to use their heads they dont use it...

And this game me the next idea on the next blog....