Beyond Turing's Boundaries: The Evolution of Thought from Oracle Machines to Distributed Decision Systems Since the mid-20th century, the "universal computer" model proposed by Alan Turing has built the cornerstone of modern digital civilization. From operating systems to programming languages, Turing completeness has become the standard for measuring the capabilities of a computing system. However, this strength precisely foreshadows its boundaries. As Kurt G ö del's incompleteness theorem reveals, any sufficiently powerful formal system must have propositions that its internal logic cannot prove or falsify. This means that the limitations of computation are not due to speed or storage, but rather a fate rooted in the logical structure itself. To answer this fundamental question, Turing himself proposed a far sighted thought experiment in his doctoral thesis in 1939: the Oracle Machine. He envisioned that if there was an 'external oracle' that could directly give 'yes' or' no 'answers to propositions that standard Turing machines could not determine, then we could construct a more powerful' relative Turing machine '. Turing divided mathematical ability into two parts: one is the mechanical deduction within the system, which he called Ingenuity; The second is the transcendent ability to make judgments outside the system, which he calls intuition. The oracle machine is a theoretical abstraction of this "intuitive" ability, attempting to break the logical loop of formal systems by introducing external judgments. The philosophical roots of this idea are deeply rooted in Intuitionism mathematics pioneered by L.E.J. Brouwer. Intuitionism directly challenged the mainstream formalism of the time, which believed that mathematical truth was equivalent to provability within an axiomatic system. Intuitionists argue that mathematical truth is not an objective existence waiting to be discovered, but rather a process of constructing the human mind. Therefore, they boldly rejected the cornerstone of classical logic - the law of excluded middle (i.e. any proposition is either true or false). In their view, it is meaningless to impose truth and falsehood values on a proposition that we cannot construct its proof or its reverse. It is this profound insight into the 'undecidable' zone that provides a solid philosophical foundation for Turing's' oracle '- this foreign judge. When theoretical exploration falls into abstraction, an unexpected projection of reality is born in the digital world. The consensus mechanism of Bitcoin provides us with an excellent example of understanding 'oracle'. We can consider the entire Bitcoin network as a distributed decision-making engine. The core question it needs to answer is: "Which version is the only valid among numerous conflicting transaction records?" This question cannot be absolutely determined within a single node. The solution of Bitcoin can be called a genius: it does not rely on any centralized referee, but transforms a purely logical decision problem into a probability problem related to physical world energy consumption and economic game through asymmetric proof of work and longest chain rule. Each miner node is engaged in "brainstorming" and independent computation; And the entire network, through irreversible investment of computing power and consensus rules, plays the role of a "oracle", making a relatively difficult final judgment on the authenticity of transaction history in economics. This judgment result is the continuously growing blockchain. Therefore, from the limitations of Turing machines facing the G ö del barrier, to Turing himself envisioning oracle machines to introduce "intuition," and to the Bitcoin network implementing "distributed decision-making" through decentralized consensus, we see a clear evolution of ideas. It marks the shift of human understanding of "computation" and "truth" from closed, pure logical deduction to open, systematic judgments that integrate game theory and external inputs. We may never be able to create an absolute oracle that knows everything, but the practice of Bitcoin proves that we can construct increasingly powerful social judgment systems, which may be the most profound echo of Turing's ideas in the 21st century.