The article discusses the concept and development of Layer 3 in the Ethereum network. Layer 3 is built on top of Layer 2 scaling solutions, aiming to provide higher scalability, interoperability, and functionality. It may include specialized solutions such as cross-chain interoperability, microtransaction channels, privacy features, and complex smart contract operations. Although the implementation of Layer 3 is still in its early stages, it represents a pursuit of a decentralized, efficient, and inclusive future. The article also mentions criticism and concerns from Polygon Labs CEO Marc Boiron and Ethereum co-founder Vitalik Buterin regarding Layer 3, emphasizing the need for careful consideration of its impact on network security, value, and sustainability.