Introducing Time: A Graphic Guide

Whatistime?The5th-centuryphilosopherStAugustinefamouslysaidthatheknewwhattimewas,solongasnooneaskedhim.Istimeafourthdimensionsimilartospaceordoesitflowinsomesense?Andifitflows,doesitmakesensetosayhowfast?Doesthefutureexist?Istimetravelpossible?Whydoestimeseemtopassinonlyonedirection?Thesequestionsandothersareamongthedeepestandmostsubtlethatonecanask,but"IntroducingTime"presentsthem-manyforthefirsttime-inaneasilyaccessible,lucidandengagingmanner,wittilyillustratedbyRalphEdney.