"Change your plans, change your behavior, change your approach starting right now." - Mayor Bill de Blasio, as quoted by Nora Barak, "Blizzard whips through New York," in New York Post, January 26, 2015. Here is the article.
President John F. Kennedy made The Triplicate in his speeches the platform for his eloquence. It was so effective that it became over-used. Also eloquence went out of style and plain-speaking came in. The Triplicate faded.
Now it has returned. President Obama leveraged The Triplicate in his State of the Union:
" ... when everyone gets their fair shot, everyone does their fair share, and everyone plays by the same set of rules."
Speechwriters have the "license" to insert The Triplicate in their clients' addresses. However, I have a hunch that it isn't appropriate for TED Talks.