Waaaayyyyyyyyyyyyy back when, in the army, in basic training, I was 17 and spent EVERY SPARE SECOND ( and, no, not a lot of it, but still ) playing pool. This was Ft. Ord, Calif, just outside Monterey. A MUCH older guy ( must've been all of 24, 25 ) from L.A., kinda took me under his wing and we ended up playing alot together ( which was frustrating, to say the least, as he played pretty sporty and NEVER let up on me ). He's the first person ever to show me, by picking the right shot, how to go for a ball, go for position, and STILL play safe if I missed. The first time he tried to explain it to me, my eyes went all glassy. After about his 2,741st attempt at both explaining and showing me, I finally got the hang of it. It wasn't called a 2-way, though. It wasn't called anything at all, as far as I know. It was simply something you needed to know if you wanted to play well. I'll never forget that. I've wondered what ever happened to that guy. I don't even remember his name anymore.