Junk email or spam is rapidly choking off email as a reliable and efficient means of communication over the Internet. While the demand for human attention increases rapidly with the volume of information and communication, the supply of attention hardly changes. Markets are a social institution...

Analogy—the ability to find and apply deep structural patterns across domains—has been fundamental to human innovation in science and technology. Today there is a growing opportunity to accelerate innovation by moving analogy out of a single person’s mind and distributing it across many...