I would debate the value of a great presentation close. Quotes, stories, challenges, etc. are all valuable to some degree but if you are relying on the final part of a presentation to “close” then the odds are against you. This would be the equivalent of throwing a Hail Mary in the closing seconds of a football game or waiting until the count was 3-2 before really trying to hit the pitch.
If you want to nail a presentation hook the audience as early as possible. Make it simple, but significant.
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