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.
What Causes Pain Behind the Knee? Why Does it Hurt in the Back of my Knee or Knee Cap? Back of knee pain, also known as posterior knee pain, can come in varied forms ranging from slight to sharp pain behind knee to pain in the back of knee when bending to back of knee pain after sitting.