Somehow I doubt that, I think his fourth dimension is very likely to be that which I referred to as hypothetical but I guess until he answers with an explanation we're clutching at straws. I'd really like to see him giving us a clearer steer on where he's coming from with this "fourth dimension". How about it MURCIEBOY - RJS is happy to share his methodology, can you share yours? Superb post Roger, really helpful. Perhaps I could second your quote outlined above