"Engineers are pretty nice people, and they assume the rest of the world is pretty nice like them," said McAfee. "But that's not the way most people are. And if

"Engineers are pretty nice people, and they assume the rest of the world is pretty nice like them," said McAfee. "But that's not the way most people are. And if you build (software) assuming that's the way people are, it will get heavily spammed. So one of the roles that economics plays at Yahoo and other tech companies is to be just a little more suspicious about human nature." I thought that was what security was for, not economists.