Ignoring all else?

If you had a one indicator, besides price, of course, what would that be. I posed this question to myself and wanted to answer BUY-SELL-PRESSURE, but could not do it, in good faith, unless I could prove to myself that it really works. For last few weeks I have almost shut myself out of all other market info, but PRICE and PRESSURE and watched how the market interpretations unfolded. So far so good, from what I can see.Rereading back last few updates, I find myself satisfied with the way markets unfolded against these comments. Good Trading