The concept of 11 dimensions in string theory is a mathematical framework used by physicists to describe the behavior of elementary particles and fundamental forces. However, it's important to understand that these dimensions are not directly observable or experienced in our everyday lives.
In string theory, the universe is hypothesized to have more than the usual three spatial dimensions (length, width, and height) that we are familiar with. The additional dimensions are believed to be "curled up" or compactified at extremely small scales, making them undetectable at our current level of technological capability.
The validity of string theory and the existence of these extra dimensions are still topics of active research and debate within the scientific community. String theory itself is a highly theoretical framework, and experimental evidence directly supporting or refuting it is currently lacking.
So, to summarize, the 11 dimensions of string theory are not considered "real" in the sense that they are directly observable or experienced, but they are part of a theoretical framework that some physicists believe could provide a deeper understanding of the fundamental nature of the universe.