Abnormal posturing is different from bad posture or slouching.. Instead, it involves holding a body position, or moving one or more parts of the body in a certain way. Abnormal posturing may be a sign of certain injuries to the brain or spinal cord.
Follow @TIME. 1963 was a momentous year in America: President John F. Kennedy was assassinated, Martin Luther King Jr. delivered his âI Have a Dreamâ speech at the March on Washington and, somewhat less heralded by all but the most fervent postal historians, the ZIP code was introduced.
Moon originally invented a three-digit code system that he believed was necessary for the post office to keep up with the mail volume after WWII. This system was later expanded into the ZIP Code system put into use in 1963. Moonâs numerical system was designed from the outset for mechanical sorting.