The original versions of Precision were quite natural. People quote the 1C bid with it's 1D negative reply, but isn't it akin to other so-called natural systems opening 2C with a 2D negative reply ? Personally I find no pressing need to open 1D with fewer than 4. It is said that you might find yourself opening 1NT on unsuitable hands, but Acol players do so equally as often. I therefore do not regard basic Precision as being non-natural. Most bids means exactly what they say. For people wishing to give the system a try I suggest you get hold of "Precision Bidding and Precision Play" by T. Reese.
