Our local discussion group was due to visit last week. Tim was getting the figures ready and assessing where the farm was at. “Do you want to come for a walk with me?” he asked. I knew he was referring to a grass walk. Dairy farmers cover several kilometres every day, changing fences and organising the next grazing paddock. Normally we’d have the quadrant in hand, the plastic bag to contain the freshly cut grass and the weighing scales.