True, and they will obviously have to learn to communicate between eachother as in football or basketball, but it worked pretty well in the test run so far, so why not at least try it?
Right now, the sad reality is that Ireland got blatantly cheated by both Henry and the linesman (how do you not see Henry is offside before the handball?) and it's not the first nor is it the last time it will happen. Unless something is done, it's going to continue happening.