Financial innovation is a different animal than other types of innovation. For example, when the PC was invented, it replaced the typewriter and increased efficiency; as a result, the economy profited. In other words, there was little downside to this innovation. However, some recent financial innovations could be said to me more destructive than productive. Derivatives, structured investment products and non-conventional mortgages have all fallen under public scrutiny in recent years as innovations that proved to bring more harm than good.