But can robots roll up their figurative sleeves and pick fruit? Vision Robotics, a company in San Diego, thinks so. It's building scouting robots that use multiple stereo cameras to locate and size the fruit in the trees. The 'bots beam that info to robotic fruit pickers that look like mechanized octopuses on tank treads with long harvesting arms that gently pluck the produce. For now, the speed and accuracy of the machines still lag behind their human counterparts, and they still cost far more to employ. For Singh, that's a deal-breaker: "It would be 15 minutes before [farmers] would start asking, 'How much does it cost?' If a robot is 10 times as expensive or 10 times as slow as a human, then it won't work."