The Secret Genius of Modern Life: Season 1, Episode 3

1 - 3: Virtual Assistant

Hannah Fry delves into the inner workings of virtual assistants, such as Google Assistant and Siri, which are now found in almost half of all UK homes.

Hannah goes behind the scenes with Alexa's chief scientist, reveals how secret technology invented to hunt U-boats led to their targeted hearing, and discovers modern wireless networks' debt to a 1940s Hollywood star.