Small,
cheap farming robots are being developed to pay attention to each
individual plant, and to kill weeds without pesticides.
In growing wheat, they could be used to enable the same number of
humans to do a far better job. However, the plans for broccoli would
imply a big cut in employment, and that will harm people. Until we
are ready to prevent efficiency from making millions of people starve
in the midst of plenty, we should not allow robots to be used that
way.
Meanwhile, when farmers use such robots, they deserve to run their
robots with free software, and to process their data with free
software too.