La ilusión del tiempo

What is time? Few subjects have fascinated scientists, philosophers, and even artists more throughout history. Centuries later, physics still lacks a definitive answer to this question; in fact, the debate is more alive than ever. However, modern physics has revealed surprising properties of time—aspects of its nature that clash head-on with our common sense. In this illuminating essay, Professor Alberto Casas journeys from the work of Newton and Einstein to the films of Christopher Nolan, taking in the theory of relativity, quantum physics, and the concept of entropy along the way. This exploration leads us to reflect on extraordinary events, such as the Big Bang, as well as far more ordinary ones, like a stone falling into a pond. It also leads us to consider what is perhaps the greatest question of all: is the passage of time real... or is it an illusion?