Overview
The blockchain trilemma, a concept introduced by Vitalik Buterin, co-founder of Ethereum, highlights the challenges of achieving security, scalability, and decentralization in blockchain systems, while decentralization is a core principle of blockchain technology, as seen in projects like Bitcoin and Polkadot, which prioritize decentralization over scalability and security, unlike centralized systems like Facebook's Libra, which prioritize security and scalability over decentralization, as discussed by experts like Tim Berners-Lee and Nick Szabo