What if history got it wrong? For more than a century, Albert Einstein has been celebrated as the greatest scientific genius of the modern age. His name has become synonymous with relativity, spacetime, and even the equation E = mc². But how much of that reputation reflects historical reality? In Against Einstein, Matthew Ward-Broadfield takes readers on a provocative journey through the forgotten history of physics, revisiting the work of James Clerk Maxwell, Hendrik Lorentz, Hermann Minkowski, Olinto De Pretto, Gregorio Ricci, Marcel Grossmann, David Hilbert, Michele Besso, Karl Schwarzschild and many others whose contributions helped shape the theories now attributed to a single man. The book argues that modern physics abandoned the concept of a physical medium too soon and has spent the last century patching that decision with dark matter, dark energy, and other unseen constructs. It challenges readers to reconsider whether space is truly empty-or whether it is a real physical medium that underpins gravity, light, and the universe itself. Part historical investigation, part scientific critique, and part introduction to the revolutionary framework of Temporal Congestion Mechanics, this book questions one of science's most celebrated narratives and asks whether the road not taken may have been the correct one all along. Whether you agree or disagree, you will never look at Einstein-or the foundations of modern physics-in quite the same way again.