Giver Theories

This is what happens when you are bored.  

Theory 1: Laborers are drones

There are only 50 births per year, right? And in the Ceremony of Twelve, Jonas and his classmates seem to get pretty specific, important jobs like Fishery Attendant or Assistant Recreation Director. So where do all the common workers come in? There is a huge gap here. The only thing the story mentions is that Birthmothers are put to work when their three births are over. I believe the former Birthmothers are not enough to fulfill the demands of the community. Let's say there are around 44 former Birthmothers in the community at one time (ages 16-70, which I would assume is the age you would be considered "Old"). That isn't nearly enough to serve their society. That's why I think the same scientists that engineered Sameness also engineered human-like robots to perform simple labor like Path-Working or Gardening. It makes sense since actual humans are required to perform all the important thinking tasks, and since the community wants to keep the population low, human thoughts and instincts cannot be wasted on mindless tasks. If you have the technology to create a world where everything is the same, why not create drones to help you out?