Another mini dot-com bubble in the making. Anybody remember when Cisco became the most valuable company in the world? I don't, and I am pretty sure a lot of young investors in their 20s and 30s don't. This phenomenon is nothing new. Issac Newton, after losing 3 million dollars (in today's valuations)- "I Can Calculate the Motions of the Planets, but I Cannot Calculate the Madness of Men".