An analysis has been performed of the theories and postulates advanced by von Neumann, London and Bauer, and Wigner, concerning the role that consciousness might play in the collapse of the wave function, which has become known as the measurement problem.
giving out or weakness of the knees can have different causes. These can include problems outside the knee joint itself (weak muscles for example) or inside the knee (torn ligaments or cartilage). See an orthopaedic surgeon to address your individual problem.
You may also be suffering from runner's knee a condition that is caused when the knee cap is out of line and not tracking properly along the femur. This is often caused by an injury or stress on the tibia, or the lower bone in your leg which protects our kneecap. If any of these bones come out of line, the knee may click when it is bent. You may also suffer runner's knee if the IT band which stabilizes the kneecap or your quad muscles are overworked.