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First Principles Ep. 3 with Leslie Lamport Before blockchains could reach consensus, Leslie Lamport had to define what agreement even meant when computers fail, lie, or disappear. Hosted by Tim Roughgarden with Ittai Abraham. 00:00 The problem every blockchain is built to solve 02:52 Why concurrent systems are surprisingly... show more
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First Principles Ep. 2 w/ Barbara Liskov Every blockchain alive today leans on replication ideas worked out in the 1980s, by a Turing Award winner who wasn’t thinking about how it might apply to money at all. Hosted by @Tim_Roughgarden with @ittaia. 00:00 How do systems stay reliable when parts fail? 01:18 Barbara Liskov’s path from programming languages to distributed systems 05:45 Why modularity is “everything” 07:22 The replication problem: keeping data available across many machines 09:58 Viewstamped replication and the “ledger” before blockchains 16:32 Why good research starts with what you don’t understand 18:10 Leslie Lamport, Paxos, and the inevitability of ideas in the right time, in the right place 21:48 Practical Byzantine Fault Tolerance: what changes when replicas can lie 19:35 How PBFT bridged theory and practical systems 22:38 Why you should never trust an individual replica 28:39 Why blockchains are state machine replication in the wild 31:27 AI, verification, and the future of computer science

First Principles Ep. 1 Bitcoin gets credited with inventing trustless consensus. It didn’t. The problem was named in the 1980s, and it took the research world years to even notice Satoshi had solved it. A new series hosted by @Tim_Roughgarden, with @ittaia. 00:00 Introduction to First Principles: The Scientific Roots of Blockchain Technology 00:56 Why consensus matters for blockchains 02:30 Byzantine agreement: The old computer science problem Bitcoin made practical 04:34 Blockchains as a shared system of record: State machine replication and blockchain state 06:41 How two research worlds — distributed computing and crypto — began to converge 07:49 Proof of work vs. proof of stake 09:27 Why Ethereum’s move to proof-of-stake took years 11:08 When crypto rediscovered decades of distributed systems research 12:49 Throughput, latency, and modern consensus design 14:05 DAG-based protocols and faster blockchains 15:25 Peace time vs. war time: why modern blockchains need two modes 16:47 Theory, practice, and the future of blockchain research

A handful of ideas hold up the entire digital world, but most of us never learn where they came from. So we went to the source: the people who solved these problems, and won Turing Awards and Nobel Prizes for it. First Principles, hosted by @Tim_Roughgarden. First episode out now.

@Tim_Roughgarden @ittaia teoria legal mas a gente so lança meme na solana e torce pra 100x

@Tim_Roughgarden @ittaia Como o apoio da DARPA influenciou o desenvolvimento de algoritmos como o Paxos?

@Tim_Roughgarden @ittaia una vez en p2p dos vendedores me dieron saldos distintos y no supe cual creer, perdi la transaccion.

@Tim_Roughgarden @ittaia Are these interviews on YouTube as well?

@Tim_Roughgarden @ittaia Interview @dominic_w hes the best $ICP

@Tim_Roughgarden @ittaia

@Tim_Roughgarden @ittaia Paxos and PBFT solve agreement on ordering when proposers can fail or lie. @RetiumChain 's mesh sidesteps that specific problem: block position is computed from factorization, not proposed and voted on. Keepers still agree on canonical ticks, just not on competing proposals.

