Are deception and secrecy categorically wrong? Or can they be a necessary means to an end? On this week's show, TED speakers share stories of going undercover to explore unknown territory, and find the truth.
Youtube activist Theo E.J. Wilson wondered about the people posting racist comments on his videos, and where they were getting their facts. So he adopted a pseudonym and joined their conversation.
When journalist Jamie Bartlett dove into the secret, hidden part of the Internet known as the Dark Web, he was surprised by what he found lurking there.
When his childhood friend was connected with a terrorist attack, Mubin Shaikh set out to help combat Islamic extremists--even though he used to be one. So he joined the Canadian Intelligence Service.
When Shabana Basij-Rasikh was six years old, the Taliban forbade girls from getting an education. Rather than giving in to their threats, she dressed up as a boy and went to a secret school for girls in Kabul.