From the article: "Ian Johnson 's important work is challenging the notion that the Chinese state has successfully achieved a state of complete amnesia regarding Chinese history:
'But starting a few years later, this pattern of historical erasure began to break down. The key reason is the rise of a movement of citizen historians who are successfully challenging the party’s control of history. Underpinning their efforts are two basic digital technologies that we often take for granted: PDFs and digital cameras. Because they are so ubiquitous in modern life, they are easily overlooked, and yet they have fundamentally changed how historical memory is preserved and spread in authoritarian states such as China.'"