Shankar Vedantam

In 2006, Derek Amato suffered a major concussion from diving into a shallow swimming pool. When he woke up in the hospital, he was different. He discovered he was really good a playing piano.

It may sound like the plot of a movie: police find a young man dead with stab wounds. Tests quickly show he'd had Ebola.

Officials realize the suspects in the case, men in a local gang, may have picked up and spread Ebola across the slum. These men are reluctant to quarantine themselves and some – including a man nicknamed "Time Bomb" – cannot even be found.

This scenario actually unfolded in the West African country of Liberia in 2015. And what followed was a truly unconventional effort by epidemiologists to stop a new Ebola outbreak.

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Authenticity is a trait we all prize. We all want the real thing - whether that thing is a designer purse, or a loving relationship.

But the two stories you'll hear today raise profound questions about authenticity and nature of human belief: If you believe something is real, if you can fall in love with someone or stand in awe of a painting, is it possible that it doesn't actually matter whether the object of your affection is fake?

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