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.
This is often a surgical problem as the piece needs to be taken out for the symptoms to resolve. More commonly, irritation of the front of the knee joint called the patellofemoral region can cause a sudden relaxation of the quadriceps (thigh) muscle leading to a similar giving way sensation. This is very common!