I recently volunteered to help a local vineyard harvest their grapes. It was a learning experience, and I thought about robots and if they'd be suitable. Part of the "skill" involved was leaving grapes on the vine that hadn't ripened 100%. Furthermore, the care required to gently clip and extract the grapes from a "viney" plant without damage or loss was sometimes tricky. Hard to see a robot mastering the process, without changes in how the grapes are grown/attached.