The statement you mentioned is a famous line from the book "The Fault in Our Stars" by John Green. It refers to a mathematical concept known as "different sizes of infinity" or "cardinalities," which arises in the field of set theory. However, it is important to note that this concept of different sizes of infinity does not directly translate to the physical universe or our understanding of time.
In mathematics, the concept of different sizes of infinity arises when comparing the cardinality (the size) of different sets. For example, the set of all natural numbers (1, 2, 3, ...) is infinite, but it is considered smaller in size than the set of all real numbers, which includes both rational and irrational numbers. Both sets are infinite, but the set of real numbers has a higher cardinality, meaning it contains "more" elements.
When it comes to understanding the universe and the nature of time, it is important to rely on scientific theories, observations, and empirical evidence. While there are still many mysteries and open questions in physics, such as the nature of time and the possibility of other dimensions, these are explored within the framework of scientific inquiry rather than mathematical paradoxes like the different sizes of infinity.
It's worth noting that some concepts in theoretical physics, such as the idea of multiple universes or different "branches" of reality in quantum mechanics (as suggested by the Many-Worlds Interpretation), may lead to interesting discussions about different possibilities and peculiarities. However, these ideas are still speculative and are subject to ongoing scientific investigation and debate.
In summary, while the concept of different sizes of infinity is a fascinating mathematical idea, it is not directly applicable to understanding the peculiarities of our universe or moments outside our normal paradigm. Exploring and understanding the universe requires a scientific approach that incorporates empirical evidence, observations, and testable theories.