.. _$_00-prologue: ======== Prologue ======== | I keep six honest serving-men (they taught me all I knew); | Their names are What and Why and When | and How and Where and Who. | | - Rudyard Kipling, "The Elephant's Child" 1902. | | These six questions are tools to gain knowledge. In science, two important questions are "How" and "Why" things are `related`. Discovery processes investigate `relationships among things`. Ontologies are systematic tools for recording knowledge and documenting `relationships among things`. Ontomatica integrates knowledge and informatics for foods, agricultural commodities, agrochemicals and pharmaceuticals to present important `relationships among them`.