> isn't it easier to fake black&white photos Stalin did use black and white photo montages. Check out the Wikipedia article [1]. > The only way to check if so

> isn't it easier to fake black&white photos Stalin did use black and white photo montages. Check out the Wikipedia article [1]. > The only way to check if something happened now would be to find original copies For now. Consider fine-grained 3D printing in the future. > We could rewrite the history for next generation and no one would likely notice it. It is actually a fairly practical problem in medium-term future. The only plausible solution seems to have resilient duplicated information on trusted peers. But with time, even trust rusts. [1] http://en.wikipedia.org/wiki/Photo_manipulation http://en.wikipedia.org/wiki/Photo_manipulation