In all seriousness, one of the reasons that we don't know what was happening in England (apart from Falstaff snuffing it), is that there is a complete lack of data. Social history is every bit as important as grand events. Our time (say 1930 onwards) is likely to be one of the best recorded periods and that will continue to improve with technology. The true skill will become the ability to filter that information.
Sorry to drag this back, but I would argue that 'our time' won't be any more or less documented than the previous 100 years. A lot of our information is now stored digitally and / or online. What happens when the software becomes outdated? Has anyone here tried opening a Word document that was initially created in the early 1990's - if you have what did you notice?!
Much of what is created now will be lost in the future, the same as any other time in history. My photos, as much as they are of interest to me will be gone when I go. 1 or 2 prints may survive a bit longer if and when I have kids, but I doubt it!