In the three countries I’ve spent my life caring about—India, the U.K., and the United States—self-serving falsehoods are regularly presented as facts, while more reliable information is denigrated as “fake news.” However, the defenders of the real, attempting to dam the torrent of disinformation flooding over us all, often make the mistake of yearning for a golden age when truth was uncontested and universally accepted, and of arguing that what we need is to return to that blissful consensus. The truth is that truth has always been a contested idea.