I’ve heard this idea a lot and it always strikes me as one of those things that’s technically true but wildly off base. I get that the equations are mathematica

I’ve heard this idea a lot and it always strikes me as one of those things that’s technically true but wildly off base. I get that the equations are mathematically reversible. Presumably we’re more interested in the world than we are the math though, and in real life almost nothing can be worked backwards. There’s a lamp on the dresser for example. How did it get there? Go ahead and run the kinematics in reverse and tell me which of the infinite solutions is the truth.