dcblogs writes "Vinton Cerf is warning that digital things created today — spreadsheets, documents, presentations as well as mountains of scientific data — may not be readable in the years and centuries ahead. Cerf illustrates the problem in a simple way. He runs Microsoft Office 2011 on Macintosh, but it cannot read a 1997 PowerPoint file. 'It doesn't know what it is,' he said. 'I'm not blaming Microsoft,' said Cerf, who is Google's vice president and chief Internet evangelist. 'What I'm saying is that backward compatibility is very hard to preserve over very long periods of time.' He calls it a 'hard problem.'" We're at an interesting spot right now, where we're worried that the internet won't remember everything, and also that it won't forget anything.