It is a good quote for most people. However, I know that Benoit Mandelbrot would say that what you describe is actually the rational thing. Meaning that randomness actually works that way. People don't understand randomness, that is the problem. They think random events happen one there and one here. Nope, randomness usually means that multiple unspected things happen after each other. Mandelbrot is seen as the father of fractal geometry and he has adapted his theories to the market as well. The (mis)behavior of markets is a really interesting book to read if you want to read some criticism on how the modern market analyses go about. It isn't investment advice, but it gives you a new look on things that happen.