A strictly increasing function is implemented to generate a plurality of unique creation stamps, each of the plurality of unique creation stamps increasing over time pursuant to the strictly increasing function. A new task to be placed with the plurality of tasks is labeled with a new unique creation stamp of the plurality of unique creation stamps. The one of the list of dismissal rules holds a minimal valid creation (MVC) stamp, which is updated when a dismissal action for the one of the list of dismissal rules is executed. The dismissal action acts to dismiss a selection of tasks over time due to continuous dispatch.