This paper explores the incentive, design process, and realization of an adaptable building system. Hoberman Associatesi installation at the Graduate School of Design at Harvard  University, Adaptive Fritting, is used as a case study for the more general thesis of mechanism design in architecture. Traditionally seen as expensive and impractical, “movement” in buildings can be accessible if done with high economy and simple elegance. The goal of this example is to illustrate the design process, challenges, constraints and parameters required to realize an adaptable architectural system.