I've been following the "You Do The Leg Work" and "Obsolete Cartridges" threads and now want to let my own doom and gloom shine. To keep the math simple lets say the kids born on or around 1990 were the first to really begin to grow up with computers. There now about 30 and having families of there own. These would be the second computer generation. And somewhere around 2040-2050 the third computer generation will begin. After that what happens when the "CLOUD' or what ever holds the worlds knowledge suddenly fails. The reason for the failure won't matter just the results. How much of the collective worlds knowledge would actually be lost if you don't know where else to look. How will they know to use a slide rule? A micrometer or anything else that would require reverse engineering to understand. If these individuals don't have instant access at there finger tips where do they look? In the original dark ages say between the years 500 and 1000 people weren't all dependent on a singular device and look what happened then.