The Unexpected Hanging Paradox

In this video we take a look at the unexpected hanging paradox, also known as the surprise exam paradox. Almost 100 papers have been published on the paradox, but there is still no agreement on what the correct solution is. Can you solve the paradox?
Sources and additional reading:
Music:
"Constancy Part Three"
Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
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