In this 2012 review, Jack W. Scannell, Alex Blanckley, Helen Boldon, and Brian Warrington discuss “Eroom’s Law,” which focuses on the drug market instead of technology and is the opposite of Moore’s Law in name and concept: The cost of developing a new drug doubles approximately every nine years, indicating that the number of drugs approved per billion dollars spent has fallen 80-fold since 1950. The authors review four major factors for this phenomenon.