The trilemma, often visualized as a triangle, consists of three issues related to the sustainability of public blockchains: scalability, decentralization, and security. The trilemma assumes that while it strengthens one of the triangle's vertices, at least one of the others must weaken. '
In 2018, during the heyday of this trilemma, most people cited the Bitcoin / Ethereum Proof of Work (Network Security Design) consensus algorithm as excellent examples of how decentralization reduces transaction performance.
Bitcoin developers are looking for Layer 2 solutions like Lightning to create a convenient payment system based on a secure foundation, while Ethereum developers are looking at Layer 2 and network overhaul.
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