The study of the past. 'History' is often used to mean 'historical knowledge' when in reality 'history' is the process of researching the past using the available evidence, cross referencing and establishing 'historical knowledge'.

Historians argue about whose interpretation is most valid. These debates often last decades and are only resolved when either one side's research is shown to be of poor quality, or when new evidence comes to light proving one interpretation more valid.

Postmodernists argue that history is rubbish because they reckon that it impossible to understand al the motivations of the creator of the surce material which 'history' uses to forge historical knowledge. They're wrong.