I'm not really sure about the educating a deer theory, but I have blind called before with a grunt tube and had good sucsess. Actually in 2005 with our season coming to an end, I blind called (grunting)and shot the best buck I've taken with a bow. I think alot has to do with the time of year and the attitude of the deer if that makes sense. Here is a picture of my sucsess story of blind calling .