anchor: The manual counting of the  hands  and  bunches  of bananas (recounted in Harry Belafonte's famous  Banana Boat Song ) was mechanized in the 1960s, but the work of loading the boats is still labor intensive.
positive: Banana counting was mechanized in the 1960s, but the boat loading still requires heavy labor.
negative: The manual counting of the hands and bunches of carrots was mechanized in the 1930s.