Characters

Field minder- maintaining agricultural fields (class 3 brain)

Penner-holds pens, small, judge mental (class 3 brain)

Operator-big, stationary, leader (class 2 brain)

Quarrier-obedient, strong (class 5 brain)"exterior chutes and scales and grabs were so vastly different from the field-minder’s own limbs"(Aldiss-1)d