When I commented on twitter that the Foodpairing talk was a information architecture talk, one person replied, “why? It’s not about controlled vocabularies or metadata.” That is like saying a talk on mapmaking isn't a design talk because it doesn't mention photoshop. Taxonomies, controlled vocabularies, those are just tools. Metadata is just a material. Information Architecture is about making meaning out of piles of facts. Who cares how you do it, or in what medium?