Conceptual physicists believe there is a Theory Of Everything- one nice neat way to tie together the universe, which works in opposite ways at the biggest and smallest scales.
That is a very human urge, and we're good at it: looking for simplicity in noisy environments, latching onto random bits of data as the explanation for larger events, or simply picking out evidence that supports what we want to be true.
Many grand plans, designed as simple solutions to problems, often fall apart during implementation as the dirty reality on the ground doesn't fall neatly into line. While the Grand Plan may act as a guide in daily decision making, their are simply too many details to shoehorn into neat policies.
Organizations who try to be too simplistic may feel good at the roll-out, but will struggle when human nature begins to weigh in.