Shortened form of feasibility. Commonly used in the context of project management, or business to indicate the financial viability of a business venture or plan. To say that you are not informed in the "art of feso" may indicate a lack of financial and/or business acumen.
"I was number crunching in my feso to get the best result", "You're not educated in the art of feso"
by snapdan! April 09, 2008