Historians have to be careful of a number of things when using sources. They must find how reliable a source is and need to know if it is accurate, bias or if it contains any exaggeration or propaganda.
- Accuracy involves judging how accurate the information you are using is.
- Bias is when the account is not balanced but unfairly favours one side.
- Exaggeration is when something is represented better or worse than it actually is.
- Propaganda is information that has been designed to influence the attitudes of the general public.