What role does defensive conduct play in a utilitarian theory of tort law? Why are rational (as opposed to instinctive) defensive actions permitted by tort doctrine? To address these questions I will build on the property and liability rules framework. I argue that defensive conduct plays an...

The new Horizontal Merger Guidelines, if treated by courts as a source of law, would reduce the discretion traditionally exercised by courts in defining relevant markets and market power in merger cases. This is an undesirable shift in the balance of power because courts have used the market...