View full lesson: http://ed.ted.com/lessons/beyond-the-shadow-of-a-doubt-gina-cooke

Say the word "doubt" aloud. What is that "b" doing there? Does it have any purpose? Gina Cooke explains the long and winding history of "doubt" and why the spelling, though it seems random, is a wink to its storied past.

Lesson by Gina Cooke, animation by The Leading Sheep Studios.

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