ENGINEER(MODERATE-EXTREME) CAN BE BOTH BUSINESSPERSON(EXTREME-EXTREME) AND WORKER(MODERATE)(LEADER). BUT IT IS DERIVED THAT BUSINESSPERSON(EXTREME-EXTREME) CAN'T BE BOTH ENGINEER(MODERATE-EXTREME) AND LEADER(MODERATE). THERE IS LIMITATION FOR BUSINESSPERSON(EXTREME-EXTREME).

   Businessperson is engineer of engineer.
   Engineer is businessperson of businessperson as well as worker of worker.
   Worker is engineer of engineer.