Maybe we need to think more carefully about how we archive historical data online. After all, suppose someone "discovers" an old manifesto that reveals somethin

Maybe we need to think more carefully about how we archive historical data online. After all, suppose someone "discovers" an old manifesto that reveals something controversial: without proof that the content hasn't been altered since it was captured, the content has no validity whatsoever. And taking this to its natural conclusion, a malicious opponent could fake archive data in order to gain an advantage.