On the Upsides of Aggregation
Aggregation, and minimizing associated information loss, is a pervasive theme in accounting. In contrast, this paper highlights some potential benefits of aggregation, using simple examples to illustrate ideas from a number of recent papers in a parsimonious manner. Aggregation rules can improve decision making because of their ability to convey appropriate information and because such rules may permit offsetting errors. Turning to control problems, aggregation has merit in the provision of both explicit and implicit incentives.