There are various arguments for the metaphysical impossibility of time travel. Is it impossible because objects could then be in two places at once? Or is it impossible because some objects could bring about their own existence? In this book, Nikk Effingham contends that no such argument is sound and that time travel is metaphysically possible. His main focus is on the Grandfather Paradox: the position that time travel is impossible because someone could not go back in time and kill their own grandfather before he met their grandmother. In such a case, Effingham argues that the time traveller would have the ability to do the impossible (so they could kill their grandfather) even though those impossibilities will never come about (so they won't kill their grandfather). He then explores the ramifications of this view, discussing issues in probability and decision theory. The book ends by laying out the dangers of time travel and why, even though no time machines currently exist, we should pay extra special care ensuring that nothing, no matter how small or microscopic, ever travels in time.

The topic of time travel provides tantalizing conundrums to consider for STEM experts and sci-fi creators alike. Most scientists and mathematicians agree that time travel by humans is probably impossible, yet they have not been able to offer conclusive proof. This book describes how the very nature of time remains a fascinating and complex subject, whether viewed from the perspective of Einstein's relativity or the nanoscale realm of quantum physics. Readers will recognize notable fictional works in literature, film, and television in which time travel serves as a useful plot device as well as a means of examining human history and contemporary social issues.

Teresa's grandfather tells her that time travel is possible. Can he be serious? How can it be true?

Discusses the scientific possibility of time travel; uses the concept of time travel to examine the origin of the universe; and explores the future of human existence.

Time travel is not only possible, it has been accomplished. Today, quantum mechanics experiments have slipped past the boundary of time, but has there been others who previously have, somehow, viewed and even participated in life at an earlier time than they experience in the present day? There are some surprising answers and evidence of this new science of time travel. This book exposes some of the many examples of time travel.

Time travel romance is not the same thing as sci-fi romance, though some stories may be set in an imagined future; it is romantic fiction set in various different eras, usually from around the sixteenth to the eighteenth centuries. A woman may fall asleep in Central Park in the present to wake up in the arms of a Scottish laird in the sixteenth century. The Mammoth Book of Time Travel Romance contains 25 stories of adventure and love; settings include medieval Scotland, sixteenth-century England, the nineteenth-century 'Wild West'. Some stories are set in the present and a few in the future. Stories include an Elizabethan nobleman whisked into the present day, a troubled young woman who lands in the sixteenth century able to break a curse of lost love. Includes stories from: Nina Bangs, Jude Deveraux, Sandra Hill, Linda Howard, Lynn Kurland, Karen Marie Moning, and many more.

In recent years numerous films, television series, comic books, graphic novels and video games have featured time travel narratives, with characters jumping backward, forward and laterally through time. No rules govern time travel in these stories. Some characters move by machine, some by magic, others by unexplained means. Sometime travelers can alter the timeline, while others are prevented from causing temporal aberrations. The fluid forms of imagined time travel have fascinated audiences and prompted debate since at least the 19th century. What is behind our fascination with time travel? What does it mean to be out of one's own era? How do different media tell these stories and what does this reveal about the media's relationship to time? This collection of new essays--the first to address time travel across a range of media--answers these questions by locating time travel narratives within their cultural, historical and philosophical contexts. Texts discussed include Doctor Who, The Terminator, The Georgian House, Save the Date, Back to the Future, Inception, Source Code and others.