The concept of particles in physics is a fundamental one, but it is important to note that particles are not tiny spheres in a literal sense. The visual representation of particles as little spheres in diagrams is often used as a convenient way to depict their interactions and relationships.
In the framework of quantum mechanics, particles are described by wave functions, which are mathematical entities that represent the probability distributions of a particle's properties. These wave functions can exhibit wave-like behavior, such as interference and superposition, which cannot be fully explained by classical concepts like solid spheres.
The nature of particles and their behavior is better understood within the context of quantum field theory, which describes particles as excitations of underlying quantum fields. These fields permeate all of space and interact with each other, giving rise to the phenomena we observe.
While it is true that everything in the universe is interconnected and can be described by overlapping n-dimensional waves, it is important to recognize that particles emerge as localized excitations or concentrations of energy within these fields. The concept of particles provides a useful framework for understanding and predicting the behavior of matter and energy at certain scales and under specific conditions.
So, while it is valid to view everything as interconnected waves, the concept of particles is still relevant and useful in our understanding of the physical world. It's a matter of choosing the appropriate framework to describe and analyze phenomena at different scales and contexts.