'Sometimes all it takes is someone showing that you can.'It is the most famous theory of all time.But how many of us know what it means exactly? And why is it still relevant to us one hundred years later?World-renowned scientist Christophe Galfard considers the real meaning behind the iconic sequence of symbols that make up Einstein's most celebrated equation.In his trademark accessible and evocative style, Galfard considers its impact on our vision of reality, giving us a new understanding of the nature of space and time.