What a powerhouse woman! 🔥🧠 #TheSecretGeniusOfModernLife #HannahFry #Science #STEM #Throwback We learn all about the feminist engineering icon, Caroline Haslett, and how she changed the future of modern technology. Especially... the British plug! Hannah Fry also takes us through the engineering genius of the British plug, which suggests how safe it really is. The Secret Genius of Modern Life: Hannah Fry uncovers the secrets behind the miraculous technologies of the modern world, revealing the mind-blowing stories behind their invention.