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.
The most common causes of pain after knee replacement include: Loosening or Wearing of the Implant. This is most often the cause of pain years or decades after the knee replacement; however, it is seldom the cause of persistent pain right after surgery. Infection. Infection is a serious and worrisome concern.