Analyzing Parachains: Who Built Parachains? What Are Parachains? Why Do We Need Parachains?

How did parachains evolve from research papers to code implementation? How will parathreads, nested relay chains, etc., develop in the future? Where are the limits of parachain scalability? In the roundtable discussion "Analyzing Parachains: Who Built Parachains? What Are Parachains? Why Do We Need Parachains?" at 2021 Polkadot Decoded, researcher Jeff, code implementer Rob, and host Joe discussed some important questions for parachain development. PolkaWorld summarizes the main content of this roundtable in this article.