The Flow   Mostly it happens outside hunkered down by a fence line dividing land into rectangles or using T-square and tape measure to cut a straight line through timber when you pause for a rest sweaty and tired with no one around and no particular sound.   Mostly it happens in the country and mostly you have to be alone so there is no conversation no human interaction to distract you and nothing in your mind no planning or reviewing going on no mental effort and no gloating or resentment just emptiness and quiet inside.   Mostly it happens…