Didier Sornette

"The phenomena and underlying mechanisms discussed in this book may thus become even more relevant to a larger and larger portion of human activity. Understand their origin, and be prepared for subtle …"

"These rumors do not circulate in all directions, but essentially from the top to the bottom of society. The rather sophisticated presentations, the apparently serious references that seem to justify t…"

"The point is that humans are rarely at their best when they use rational reasoning."

"Faster-than-exponential growth also occurs in computing power, as measured by the evolution of the number of MIPS per $1,000 of computer from 1900 to 1997. Thus the so-called Moore's law is incorrect,…"

"At another level, market crashes constitute beautiful examples of events that we would all like to forecast. The arrow of time is inexorably projecting us toward the undetermined future. Predicting th…"

"The problem is not that this optimistic view is wrong. By economic accounting, the optimistic view is mostly right."

"The same basic ingredients are found repeatably: fueled by initially well founded economic fundamentals, investors develop a self-fulfilling enthusiasm by an imitative process or crowd behavior that l…"

"The old Wall Street saying " buy on rumors, sell on the news," is alive and well, as can be seen from numerous sources in the media and the Internet. Rumors can drive herding behavior strongly."