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.
Common Causes of Behind-Knee Pain The most likely cause is biceps femoris tendinitis, or inflammation of a hamstring tendon where it connects to the back of the knee. This can lead to pain when you bend the knee against resistance, or stiffness in the morning or after exercise.