The reality, though, is that laxatives do nothing to help you lose weight. Calories already are consumed by the time the laxatives work, and the weight you lose is mainly water. What you will get by abusing laxatives are a host of medical problems. These are just a few.
Security principals that are created in an Active Directory domain are Active Directory objects, which can be used to manage access to domain resources. Local users and security groups are created on a local computer and can be used to manage access to resources on that computer.
Well-known security principals' primary role is to provide a SID that you can add to a user's access token when a user logs on to a system or accesses a resource. The presence of a particular well-known security principal in the access token gives the user certain privileges on the system or resource.