The book, enjoyable and easy to read, well illustrated with anecdotes and practical exercises, dismantles convincingly individual and collective psychological mechanisms involved.
Having highlighted the "curse of knowledge" (we take for obvious the messages we want to convey), it mainly provides half a dozen of Practice (single, surprising, concrete, credible, emotional, backed by a history ) to better hold on the audience or mark the minds of those whom you address. This revenue is at least effective to avoid gross errors of communication.
