Part and parcel

The bi-hemispheres manage how in our modes of attention people are simultaneously both part and parcel. 

People are parts of greater wholes while at the same time they are wholes and parcels of lesser parts. The right hemisphere manages people as parts of larger wholes, while the left hemisphere manages people as parcels who are in charge of the lesser parts. 

The right hemisphere manages people’s wide open attention and their peripheral vision; the left hemisphere manages their narrow focus attention and their acute vision.