BBC News' Ros Atkins: My 7-step guide to mastering the art of explanation

Ros Atkins: the BBC News' analysis editor explains the art of explanation. Pic: Jeff Overs.
I recently went to a talk given by a psychologist on objective reality.
What promised to be an interesting and thought-provoking event was marred by its presentation; the psychologist spoke too quickly and quietly, gave too much information too rapidly, and went off on too many tangents.