Just the swapping of sides in the brain, isn’t there a clear benefit for the stress/weight of the nerves to the rest of the body? If right side was connected r

Just the swapping of sides in the brain, isn’t there a clear benefit for the stress/weight of the nerves to the rest of the body? If right side was connected right arm the nerves would be pressed “out”. When they cross there is less pressure in the spinal cord?