The equations for 3 orbiting masses are so complex and riddled with clarifying assumptions that there's nothing clear, concise, or predictive about them. Just like economics.
But hey, a little uncertainty never stopped anyone from either looking hard at reality and creating wealth, or ignoring reality and writing op-ed pieces.
Depends on the knowledge and understanding of the practiitoner.
"Just like economics.
It all depends on the skill of the folks involved. Hence, "...a little uncertainty never stopped anyone from either looking hard at reality and creating wealth." They can also use it productively to gauge the effects of various variables for the purposes of protecting rights, or for providing monetary input, as the Fed does.