Exploring the Threshold of Trends from the Perspective of Synchronization  — Elucidating the Boundary Between Transitory Phenomena and Enduring Classics Using LMT —

This paper aims to clarify the boundary between transitory fads and enduring classics in trend phenomena from the perspective of synchronization. Focusing on the interaction between Emotional Synchronization (S_em) and Structural Synchronization (S_st) in the author’s YOSHSR-2 synchronization rate model, the study proposes a “Synchronization Threshold Model of Trends” by integrating it with Load Minimization Theory (LMT: L = U + F + E). The core of the model is a sustainability function using S_base = √(S_em² + S_st²) / √2. It demonstrates that when only emotional synchronization explodes, phenomena tend to fall into a collapse loop, whereas when emotional synchronization deepens on a foundation of strong structural synchronization, a reinforcement loop emerges and total load (L_total) decreases over the long term. Through case analyses of Kenshi Yonezu’s works, Hayao Miyazaki’s films, The Beatles, the Harry Potter series, and Apple’s iPhone, the study verifies that synchronization balance is the key to crossing the trend threshold. This research redefines trends not merely as social diffusion phenomena, but as dynamics of synchronization woven from human emotion and structure. It also provides practical guidelines for creators and researchers aiming to produce works that are loved over the long term. Future directions include formalization of the model and quantitative validation, with the goal of establishing a foundation for sustainable creation in the AI era.