Even though humans have been farming for thousands of years, there's always a new trick to learn or a new technology to try. In modern times, these tricks often come attached to small flying aircraft, a fact evidenced by the continued and growing presence of drones at agricultural expositions. Successful drone use might lead to better yields in the future, with an emphasis on the future: while the FAA just proposed new drone rules, it'll likely be 18 months to two years before they come into effect. That's 18 months until farmers can fly drones in a legally unambiguous way.