Free to Think talks with Ali Arab, Associate Professor of Statistics at Georgetown University and board member of Hostage Aid Worldwide, which fights globally for the release of hostages while aiming to study and prevent hostage-taking against other innocent people.   Arab discusses "hostage diplomacy," "ransom creep," and the importance of sharing information across hostage cases, honoring family wishes, and mobilizing colleagues to raise visibility and, ultimately, secure a hostage's release.