Is democracy its biggest victim? We have long believed that the key to a free society is rational discussion in search of truth. Now some fear truth is dead — and freedom with it.
Truth is dead in our sinister era say experts
Self-belief age: When Donald Trump was asked who advises him on foreign affairs, he cited himself. Glossary
Heraclitus - An ancient Greek philosopher. He thought that change was central to the universe.
Aristotle - A student of Plato, tutor to Alexander the Great and the father of political philosophy.
Church - The Christian religious community as a whole.
Democracy - A system of government based on the idea of rule by the people.
Misinformation - Incorrect or misleading information unintentionally presented as fact. It can be contrasted with disinformation or deliberate lies.
Elon Musk - A South African-born entrepreneur whose companies have included the online payment service PayPal. He now controls Twitter, renamed 'X'.
Twitter - A social media network, now known as X and owned by Elon Musk.
Deep fakes - When AI is used to make convincing fake video, audio and images.