traker), whom the dog recognized as a familiar person. Thus, the dog's silence portended some significance. 18. See note 11, supra, at 25; see also Merriam Webster's Collegiate Dictionary 578 (10th ed. 1996) ("illustrative . . . adj.. . : serving, tending, or designed to illustrate <[illustrative] examples>").

production, distri- bution, and consumption of commodities," more recent versions of Webster's have ad- ded "services" to the defmition. See, e.g.. Merriam Webster's Collegiate Dictionary 364 (10th ed.I993) (defining "economics" as the social science concerned with "the production, distribution, and consumption