A bridge that only spans three-quarters of the distance across a chasm is useless, although far from costless. This standard, intuitive example of a lumpy or step good illustrates a point about discontinuities and complementarities that has broad, and mostly unexplored, significance for property...

Property rights have long been associated with a simple and distinctive technology: exclusion. But technologies can become outdated as conditions change, and exclusion is no exception. Recent decades have featured profound changes that have made exclusion a less useful, less necessary, and more...

Resources often produce more value in combination than they do separately: think of segments of a highway or parts of a machine. I argue that property’s defining purpose is to group together complements, and that property law and theory should focus on identifying and realizing valuable...