Disorders of the spinal cord or spine (vertebra), causing numbness and tingling in arms and/or legs: 1  Spinal cord injury. Injuries of the cervical spine result in symmetrical arm and leg paralysis and numbness. Injuries at the thoracic level affect trunk and legs, and lumbar and sacral injuries affect hips and legs.
Generalizations are summary statements of relationships between concepts, summary statements of cause and effect, or summary statements of predictions of future relationships. Generalizations are powerful as they provide a way to consolidate information to make it more usable and easier to remember. Laws, principals, and theories are all kinds of generalizations. These generalizations require the connection of concepts by a relationship.
General relativity also gives us some insight into the nature of gravitons. In general relativity, the distribution of mass and energy in the universe is described by a four-by-four matrix that mathematicians call a tensor of rank two.