"What if...?" are the two words that sow the seeds for human speculation, experimentation, invention, evolution, revolution, revision, and change. Consider the consequences of travelling back to the future or exploring the past. What if we dug a black hole or built a warp drive? How far away is science fiction from science fact? What If Einstein Was Wrong? challenges a team of scholars to experiment with 50 key topical science speculations. Explore aspects of physics that today seem as strange as when they first fooled great thinkers of the past or that remain speculative today and in so doing, build up your understanding and the knowledge you need to debate the shape that our science might take in the future. * Presents 50 sideways views on the world of physics, each one written by a leading scholar * Thought-provoking speculations engage the reader while conveying the essential basics * A new way of digesting knowledge that brings a fresh dimension to the dinner party debate