Famously quoted and cited as a story of Socrates challenging a friend, the 'three sieves' or the 'three filters' were intended as a way to decide whether to believe rumours. These three filters sound simple however it's not always that easy to apply them:
- The truth: are you sure what you are about to repeat is true?
- Is it good: is the saying positive?
- Is it necessary: is sharing this information important?