Weeding a garden (field) is called "Yurukahssahmah". It may look a simple task, but needs a special skill: to distinct "Gyarr" (millet) from "Yormahng" (weed) or vice versa. Although Gyarr is a single species, Yormahng includes every other species except the millet. They are in a figure-ground relationship. You root out Yormahng very fast, almost automatically, as if you do not actually "think" about what the grabbed species is.
Sherpa work at a field
Although acquiring the skill is of course embodied from learning, it does not only involves "acquiring". It is a process of transformation of one's worldview: The garden is not just a single-green field, but, as one would acknowledge, composed an ecosystem in which two qualitatively different beings are contesting exclusively each other. Learning is not just an instance of addition; learning inducts a beginning of a new world, a new life.