Imagine it’s the year 3000 and you’ve just done a Google search and you turn up a 1997 PowerPoint file, and you’re running Windows 3000. The question is, does it know how to interpret the PowerPoint file? The answer is probably no. I visited the library of Alexandria in January this year in Egypt, and inside that library are manuscripts that are over a thousand years old; they are still fully accessible. If we don’t do the same, what will our descendants wonder about us and the 21 century; we’ll just be a big pile of rotten bits to them.