What is information, really? A journey into the heart of digital reality

Have you ever wondered what information actually is? It's not just a WhatsApp message or a TikTok video. Scientists are asking a massive question: what is the essence of everything around us? Imagine information as the DNA of everything that exists. It's not just about cold, numerical data, but about how that data intertwines with meaning, matter, and our perception of the world.

Recently, researchers have analyzed decades of theories to try and understand where data ends and reality begins. It's a bit like trying to define the rules of a video game while you're playing it: you need to understand the code to understand how the game world changes. This research explores whether information is purely mathematical or if it needs an observer, like us, to make sense of it.

The big mystery is understanding how information connects to physical matter. If the entire universe were made of bits, how would our view of physics change? This debate between theory and reality is one of the most fascinating in modern science. Understanding information ultimately means understanding how the great puzzle of the universe works, between computational complexity and deep meaning.

Research into the nature of information moves on a thin line between pure mathematics and the philosophy of science. One of the central nodes is the transition from Claude Shannon's classical information theory — which focuses on the efficient transmission of signals by reducing uncertainty — to a broader view that includes meaning (semantics). While Shannon dealt with 'how many bits are needed to transmit a message without errors,' modern metatheory asks: 'what does it mean for a system to contain information?'. A key concept is 'intersubjectivity': the idea that information is not just an objective datum in the world, but something that emerges when a subject interprets a signal. Furthermore, the connection between information and thermodynamics (such as entropy) suggests that information is not an abstract concept, but something linked to the very structure of matter and energy. If information is fundamental, then the distinction between 'oftware' (the code of the universe) and 'hardware' (physical matter) might be much more blurred than we think, leading to theories like 'Digital Physics,' which views the universe as a gigantic computational process.