Rigidity is essential in histology as it influences a variety of physiological and pathological processes. For example, in the context of cancer, increased tissue rigidity is often associated with tumor progression and metastasis. This is because stiffer tissues can promote cell migration and invasion. Conversely, in conditions like fibrosis, excessive tissue stiffness can impair normal organ function. Understanding rigidity can also aid in the development of therapeutic strategies to modulate tissue stiffness and improve disease outcomes.