Reviewing two architecture books: Operative Design + Conditional Design and sharing my thoughts on the kit-of-parts design methodology they promote. Together these volumes are an excellent primer on architectural form making, iterative design, and can serve as handy portable, pocket-sized reference manuals. The diagrams are beautifully composed in full-color and the accompanying text - although brief - offers enough information to guide the reader / viewer on the book’s use. Recommended for: architecture students, teachers and professionals looking to revisit first principles or reinvent their own tired formal language.

**Operative Design: A Catalogue of Spatial Verbs**
**Conditional Design: An Introduction to Elemental Architecture**