For thousands of years, not much changed in agriculture. Farmers lived a subsistence life, happy to raise enough to feed their families and livestock and keep enough seed for the next year. In the past hundred years we have seen changes occur more frequently than could have ever been imagined. The horse is now the tractor. Open-pollinated corn became hybrid corn. The molecule replaced the cultivator. Even the “straight driver” has been unseated by satellite-controlled steering wheels.