Normally, new Secretaries of State come into office with a wealth of diplomatic experience and knowledge. Not so Mr. Tillerson, who served as the chief executive of Exxon, the oil giant.There Tillerson had complete control of opperations and did not have to maneuver between different power centers, as between the White House and the pentagon, for control of State Deparment influence in the government. Normally though an inexperienced Secretary of State would be expected to surround himself with experienced officials to compenstate. Tillerson by contrast left many State positions vacant, converses little and barricades himself in his seventh floor office behind a few trusted aides.
He even his his own entrance to the building that allows him to bypass staff on entering.Tillerson has found himself at odds with his own President over Middle East policy and has lost influence to Jarred Kuchner with respect to the Arab -Isralei peace talks, tentative as they are.
So I guess this leaves some room for experience and knowledge in selecting future Secretaries and puts the lie to the image of the American businessman being able to master government on his company experience alone.