Once Upon a Time There was a  Wise Man

His name was SunTzu . He was an advisor to the Emperor.

That was a incredible position to attain circa 500 B.C.

 He makes history because his writings still resonate after millennia.

His principals, set-out military strategies which are used in corporate boardrooms as well  as by disgruntled spouses these

days.

Sun Tzu (not to be confused with Sunsu of martial art kata fame) believed in the use of spies. Learn about, then dishevel the target and yet not engage in physical  combat if possible.

Look at what you could learn from studying or being an apprentice to SunTzu during his era? After his reputation blossomed he was a prized resource for the rulers. To get a "earful" of wisdom from this one wise man would have taken more than an army of spies, perhaps.