The document summarizes a presentation by Ade Shokoya of AgileTV on validating assumptions. It provides biographical information on Ade Shokoya, including his experience in agile transitions and as an author. It then outlines Donald Rumsfeld's famous quote about knowns and unknowns. The presentation discusses how unknowns can lead to uncertainty and anxiety, and cognitive biases. It advocates inspecting and adapting plans based on learning.