Why are other dimensions invisible to us?

Other dimensions are often considered invisible to us because they may exist at different scales or frequencies that our senses cannot detect. Theoretical physics suggests that dimensions beyond our familiar three spatial dimensions and time may be compactified or hidden in complex ways, making them imperceptible to human experience. Additionally, our current understanding of physics, particularly in relation to models like string theory, posits that these dimensions play a role in the fundamental structure of the universe but do not interact with us in a way that we can observe directly.