Question

In the context of dialog design, why is dialog-level reversibility not equivalent to a true undo mechanism?

a.

It requires a model of the system to work effectively

b.

It only reverts the dialog state, not the entire system state

c.

It depends on the system's semantic design

d.

It is not supported by most dialog notation tools

Posted under Human Computer Interaction

Answer: (b).It only reverts the dialog state, not the entire system state Explanation:In the context of dialog design, dialog-level reversibility is not equivalent to a true undo mechanism because it only reverts the dialog state to a previous point, not the entire system state. A true undo mechanism would need to consider the complete system state and interactions, which requires a model of the system.

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Q. In the context of dialog design, why is dialog-level reversibility not equivalent to a true undo mechanism?

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