Quantum mechanics · science fiction · String theory

I have a rant; please, just hear me out.

I have strong feelings about things that most people would ignore or do not care about. More than likely, most of the world wouldn’t even think about it. I have been thinking about this from a character’s point of view (that will be one of the main characters in a future story). It didn’t start there, but it reignited my own passion, and today I feel the need to put in my two cents worth (or your equivalent nations denomination)

Ready? Here it is. (and this really drives me bonkers) It is the careless and flippant misuse of the term ‘Dimension.” The problem is that people tend to mistake it for the many-worlds theory. The Many-Worlds theory and dimensions are two concepts that are often confused with each other. While both concepts deal with the idea of parallel universes or alternate realities, they are fundamentally different.

The Many-Worlds theory is a theory in quantum mechanics that proposes the existence of an infinite number of parallel universes (or worlds) that exist simultaneously. In this theory, each time a quantum event occurs, the universe splits into multiple universes, each with its own version of reality. For example, if you were to flip a coin, in one universe, it would land heads up, and in another universe, it would land tails up. This theory is often used in science fiction as a way to explore the consequences of different choices and actions. The many-worlds theory is a great tool to avoid paradox in time travel science fiction  (if they get the nomenclature right!)

On the other hand, dimensions refer to the physical and mathematical properties of space and time. (And this is the important part people!) The three dimensions of space are length, width, and height, while time is considered the fourth dimension. However, some theories propose the existence of additional dimensions beyond these four, such as the string theory’s ten dimensions. In science fiction, dimensions are often used to explain the existence of alternate realities or parallel universes. I think that the confusion between these two ideas arises from the misuse of the term “dimension” in science fiction. In popular culture, the term dimension is often used interchangeably with parallel universe or alternate reality. For example, in the TV show “The Twilight Zone,” characters would often travel to a “fifth dimension,” which was portrayed as an alternate reality. However, this usage is not scientifically accurate, and it can be misleading to those unfamiliar with the actual meaning of dimension, and that really bothers me. Even hard-core science fiction novelists get it wrong.

I know that it might seem like a petty argument, and to be honest, it doesn’t change anything. It is just my own pet peeve, but anytime someone says something like “from another dimension,” I cringe.