Under the Social Security Disability program, to be considered 'disabled,' individuals must be unable to perform any work. The grid rules, implemented by the Social Security Administration, take into account factors such as age, education, and skills obtained from previous work experience to determine disability eligibility, recognizing that as individuals age, it becomes more challenging for them to learn new skills and transition to different types of work. So, the more education one has, the easier it is for them to find and transfer to other or new work. On the other hand, the less education one has, the less likely they are to find other types of jobs.