HUH?! a) Why not. b) Did you read the book? c) GS is a proxy for the futures except that it doesn't go up and down through the opening range.
I have no idea what you're refering to when you say GS. The futures? the futures for what? what the hell is a proxy? I used to work with MBF. I've read the book. I've done all the tests. I'm a ACD master. Why?