be less careful during shearing so you can shear more of them in less time

Counter intuitive as it may seem the best shearers, as in fastest, are some of the least likely to injure a sheep.

Inexperienced shearers and slow shearers are more likely to have the sheep struggle and result in a cut.

Farmers don’t ever want their sheep getting cuts because they lead to infection, infections mean dead sheep. Dead sheep are lost money.