Automation is changing the nature of food production. In part two of this mini-series, John Stackhouse visits the dairy operation of Matt and Jaclyn Walker in Muir, Ontario, two food producers that define Farmer 4.0; entrepreneurs experimenting with technology and innovating the business model of farming. With their robotic milking machine, they are able to shift their focus to cultivating data, problem-solving and improving animal health. For more on Farmer 4.0, see rbc.com/farmer4