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.
Most Common Causes for Knee Replacement. 1  Arthritis: Arthritis is a wearing away of the surfaces (articular cartilage) of the joint, caused either by aging or disease. 2  Osteonecrosis: If the blood supply to the thighbone is decreased, part of the bone will die and break from weight-bearing activity.