Another, related, misinterpretation is a belief that boards following Carver's model should not involve themselves with detailed understanding and/or monitoring of the organization's activities. This belief is based on Carver's caution against excessive intrusion into the operational details. However, Carver is clear that boards remain accountable to their owners for all operational details and must therefore control them—the question is how to make this practical. As a way to avoid excessive intrusion, he advises the use of 'nested sets' of expectations, in progressively more narrow policy language, in order to define its meaning with greater precision until: "At some point, the board will have narrowed its words to the point that it can accept any reasonable interpretation of those words. Now the board has reached the point of delegation".