Why does a curved chute and round crowd pen work better than a straight one?

1. As the animals go around the curve, they think they are going back to where they came from.
2. The animals can not see people and other moving objects at the end of the chute.
3. It takes advantage of the natural circling behaviour of cattle and sheep.

CAD Drawings

UNLESS OTHERWISE SPECIFIED: All Dimensions are in Feet and Inches with (Millimeters) in brackets.