Audience of one alters the laws. No sound to hide behind, no throng to impress, no cheers to follow. Every word is raw, truthful, unable to play tricks for acceptance. Talking to one listener forces you to mean what you say since hyperbole has nowhere to lie.
Once audience of one is another person who is paying very closely and picks up what others missed. Sometimes it is yourself finally focused, without cause. Sincerity beats intensity in that still area. Influence becomes personal. One audience reminds you that numbers don't define influence. It begins with purpose, clarity, and the will to be understood by even one individual.