Space time and Consensus: The Expansion Paradox of Bitcoin from a Relativity Perspective The essential distinction between Internet products and Bitcoin (BTC) is just like the grand confrontation between Newton and Einstein in the history of physics in their understanding of the universe. The traditional Internet is built on Newton's absolute space-time view: the centralized server plays the role of "God" and has an absolute global clock. All user interactions and data reading and writing are unconditionally subject to this unique absolute time scale and centralized order. The birth of BTC completely destroyed this absolute clock and pushed the network towards Einstein's theory of special relativity's view of relative spacetime. In the decentralized network of BTC, each node is an independent observer with its own independent information receiving sequence. But in special relativity, although spacetime is relative, the unity of physical laws must rely on a definite inertial reference frame. This is the fundamental reason why BTC cannot expand to other complex businesses at will. In the special relativity system of Bitcoin, this unique and definite "inertial reference frame" is tightly bound to the longest time chain of the core business of "BTC currency transfer". Due to the complete dependence of the spatiotemporal coordinates of the entire network consensus on this specific business logic, once we attempt to extend the BTC system to other business scenarios beyond currency transfer, we will inevitably encounter a system level deadlock of 'no interface available'. Because those non monetary transfer businesses do not possess the physical properties required by this specific inertial frame, they simply cannot integrate into this extremely exclusive and deterministic spatiotemporal framework. The grey line of history suggests that Satoshi Nakamoto may have long recognized the scalability boundaries brought by this "single business inertial frame" and attempted to drive a great leap from special relativity to general relativity. In his early unfinished concept of P2P market, we glimpsed this attempt to accommodate more business forms. The most profound revelation of general relativity is that spacetime can bend in gravitational fields, and systems can operate based on relative local coordinate systems, without the need to forcefully fit everything into a uniquely determined inertial frame. The Atom trust system contained in p2pmarket is an excellent mapping of this general relativity idea. It attempts to break the limitation that all businesses must anchor the "longest chain of currency transfer" through a single interface, allowing for the establishment of independent and relative trust coordinate systems in specific business scenarios or local networks. Under this architecture, the expansion of new businesses no longer faces the deadlock of "no interface available", thus theoretically giving decentralized networks the freedom to accommodate everything. Unfortunately, perhaps due to the limited development efforts at the time, or perhaps because Satoshi Nakamoto did not stay long enough, this attempt to expand with the color of general relativity could not be completed in his hands. But the great idea of expanding a single determined inertial reference frame into an arbitrarily expandable relative coordinate system remains the most profound landmark for exploring the ultimate form of blockchain today. https://(github.com)/gguoss/My-10-Year-Journey-in-the-Crypto-World/blob/main/%E6%97%B6%E7%A9%BA%E4%B8%8E%E5%85%B1%E8%AF%86%EF%BC%9A%E4%BB%8E%E7%9B%B8%E5%AF%B9%E8%AE%BA%E8%A7%86%E8%A7%92%E7%9C%8B%E6%AF%94%E7%89%B9%E5%B8%81%E7%9A%84%E6%89%A9%E5%B1%95%E6%82%96%E8%AE%BA.md