Every reader of your ad is interested, else he would not be a reader. You are dealing with someone willing to listen. Then do your level best. That reader, if you lose him now, May never again be a reader
One may gain attention by wearing a fools cap. But he would ruin his selling prospects
The one just consider the average reader s only once a reader, probably. And when you fail to tell them in that ad is something he may never know
The weight of an argument may often be multiplied by making it specific
Picture what others wish to be, not what they may be now