Intelligent planning and calendaring system with cueing feature and floating tasks

An intelligent planning system for dynamically detecting and correcting plan errors caused by calendar changes, comprising:

• means for receiving a plurality of task descriptions, each task description describing a task to be performed by the user of the system and further comprising a plurality of properties about the task comprising an earliest start time, a latest stop time, a duration, a planned start time, and a reward value, the task descriptions including a fixed task and a floating task, the fixed task having a duration equal to the time period between the earliest start time and latest stop time, and the floating task having a duration that is less than the time period between the earliest start time and the latest stop time, wherein the planned start time of said fixed task is the same as the earliest start time of the fixed task and the planned start time of the floating task is within the interval between earliest start time and the latest stop time of the floating task minus the duration of the floating task;
• means for generating a current plan comprising the plurality of task descriptions, the current plan including fixed and floating tasks;
• means for automatically detecting and correcting errors in the current plan, the error correcting means further comprising means for changing one or more of the planned start time and the duration of the floating task so that it is still between the earliest start time and the latest stop time in order to correct the plan;
• and
• means for presenting the current plan information to the user.