Zwierz: "waste" means that there are errors in Barbours article. Can you specify them? Are there other ways of expressing fundamental equations of classical mechanics without referring to "time"?
Unfortunalety I cannot understand the contribution of Zwierz. Can you express that in words?
Thank you for the reactions so far. However, my description was not clear insofar as one must say, starting from the configuration space: One can calculate the action sum along each of the many...
An isolated mechanical system can be represented by a point in a high-dimensional configuration space. This point evolves along a line. The variational principle of Jacobi says that, among many imagined trajectories between two points, only the SHORTEST is real and is associated with situations...