This article delves into the divergent design philosophies of Bitcoin and Ethereum concerning the blockchain's 'Trilemma' (decentralization, scaling, and security). Bitcoin's architecture, characterized by its simplicity, slow block times, and limited space, is presented as a deliberate feature that underpins its robust, 'bedrock' stability. In contrast, Ethereum is highlighted as having successfully addressed and solved the Trilemma, indicating a different, more dynamic evolutionary path in blockchain development.