How to Evaluate Decentralized Projects? Understanding Vitalik Buterin's "Exit Test"
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How to Evaluate Decentralized Projects? Understanding Vitalik Buterin's "Exit Test"
Exploring risk rating in the blockchain world.
Navigating Web3 tides with focused insightsWritten by: imToken
Ethereum founder Vitalik Buterin, in his blog post Making Ethereum alignment legible, once shared a thoughtful proposal regarding decentralization and security: we should minimize reliance on centralized infrastructure and reduce vulnerabilities to censorship. To evaluate this, he suggested two assessment methods: the "Walk Away Test" and the "Insider Attack Test".
The "Insider Attack Test" involves launching self-directed attacks on a system to observe the extent of potential damage and thus uncover vulnerabilities. The "Walk Away Test", by contrast, is a newer conceptual tool designed to assess the degree of centralization dependency within projects and networks. It serves as a critical evaluation method for decentralized projects and can evolve into a comprehensive risk rating framework.
Read the original article Making Ethereum alignment legible at:
https://vitalik.eth.limo/general/2024/09/28/alignment.html
What Is the "Walk Away Test"?
If your team and servers disappeared tomorrow, would your application still function?
This is the core idea behind the "Walk Away Test"—a mental model for assessing whether a Web3 project, platform, or protocol truly possesses independent operational capability and long-term sustainability.
The "Walk Away Test" closely aligns with the technological and philosophical principles of blockchain decentralization and autonomy. It prompts reflections across several dimensions:
Development Perspective:
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If the development team disbands, can the project continue to operate independently?
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Is there an active community capable of taking over the project after the team departs?
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Is the project's code open-source and able to attract developers to continue improving it?
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Are there decentralized validator nodes securing the network, or sufficient community support to sustain its development?
Economic Model Perspective:
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Does the project have a sustainable economic model?
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Does the project offer genuinely sustainable use cases?
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Is asset appreciation on the project fundamentally dependent on speculation or centralized control?
Community Governance Perspective:
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Do all stakeholders have fair access to participate in decision-making?
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Can the project initiate governance mechanisms and resolve issues without clearly defined central managers?
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Is governance reliant on a small number of core individuals, or does it rest on a broader, distributed foundation of collective participation?
Why Is the "Walk Away Test" Important?
If a project relies heavily on its founding team or key individuals to function, or if a network depends on a fixed server to process data, then it remains essentially centralized. Its long-term viability, value, resistance to censorship, and resilience against risks may all be called into question.
The importance of the "Walk Away Test" lies in its ability—as a conceptual tool—to reveal actual dependencies on centralized infrastructure, enabling projects and networks to identify weaknesses and improve accordingly. At its core is a firm commitment to the principle of **decentralization**.
In 2017, Ethereum founder Vitalik Buterin wrote in an early blog post discussing decentralization concepts:
"Decentralization" is one of the most common terms in cryptoeconomics and is often used directly as a criterion to determine whether a network qualifies as a blockchain. Yet, confusion and misunderstanding about what the term actually means are widespread.
Vitalik Buterin pointed out that when people discuss decentralization, they are typically referring to three distinct aspects:
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Architectural Centralization vs Decentralization:
For example, how many computers make up the system? How many nodes can fail simultaneously before the system stops functioning?
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Political Centralization vs Decentralization:
For instance, how many individuals or organizations ultimately control the machines running the system?
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Logical Centralization vs Decentralization:
Is the system’s interface and database structure a single monolithic unit, or a collection of independent parts? If you split users from providers, can each side still operate independently?
Vitalik Buterin further clarified the significance of emphasizing "decentralization" in a 2018 blog post:
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Fault Tolerance: Decentralized systems are less likely to fail unexpectedly because they rely on many independent components. The probability of multiple independent components failing simultaneously is theoretically low.
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Attack Resistance: Decentralized systems are more costly and difficult to attack or manipulate due to the absence of sensitive central points. Attacking a system with a clear center is significantly easier than attacking a decentralized one.
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Anti-Collusion: In a decentralized system, participants who attempt to collude and profit at the expense of others face higher coordination costs compared to those in centralized systems.
Core Value: A Key Test for Evaluating Decentralized Projects
From the perspective of the "Walk Away Test", Bitcoin can be considered to have passed: no one knows where Satoshi Nakamoto is, yet Bitcoin continues to thrive through its decentralized network and global developer community.
In the case of Ethereum, Vitalik Buterin noted in a 2022 forum discussion that nearly all Rollups at the time were immature, relying heavily on mechanisms referred to as "Training Wheels" to ensure operational stability. However, the use of Training Wheels also reflects a Rollup project's dependence on human intervention—the less reliant a Layer2 network is on Training Wheels, the lower its risk; the more reliant, the higher the risk.
To address this, Vitalik Buterin and others proposed a staging classification based on the degree of reliance on Training Wheels: Stage 0 (fully reliant), Stage 1 (partially reliant), and Stage 2 (fully discarded). Later, the L2beat website refined this classification through community feedback and upgraded it in June 2024 into a formal "Layer2 Risk Rating Framework", assigning risk levels to various Layer2 projects.
What Are Training Wheels?
"Training Wheels" (commonly translated as auxiliary wheels) refer to restrictive mechanisms or safeguards added during the early implementation of Rollup technology to ensure safety and stability.
Rollup protocols requiring Training Wheels typically have not yet achieved trustlessness or minimal trust assumptions, often due to complex codebases lacking thorough security audits, large potential attack surfaces in smart contracts, or being newly launched with insufficient user trust.
Vitalik Buterin stated that his ideal vision is to see more entities like L2beat emerge—organizations capable of tracking how well different projects meet established criteria or community-defined standards. Competition among projects should shift away from "who has the right connections" toward "alignment" measured by clear, understandable benchmarks.
More broadly, the "Walk Away Test" can itself evolve into a comprehensive risk assessment tool, applicable not only to Layer2s but also to Web3 wallets, games, DeFi, and other decentralized applications, evaluating their true level of decentralization and long-term sustainability.
As a well-known political philosophy suggests: the best way to solve the "who watches the watchers" problem is not concentration of power, but separation of powers. Project alliances tend toward centralized power, while separation of powers requires institutional and cultural foundations—in the blockchain world, these institutions and cultures are represented by **shared consensus standards**.
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