Of this abstraction. The values for getRadius() or getCircumference() in the above example could be stored straight, or they might be calculated, it doesn't subject towards the caller; the setters could or might not have Negative effects; it won't make any difference for the caller. I realize This is certainly https://readytomovevillanoida.blogspot.com/2025/06/transforming-workspaces-into-landmarks.html