# Tim Roughgarden
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Timothy Avelin Roughgarden is an American computer scientist and a Professor of Computer Science at Columbia University. Roughgarden's work deals primarily with game theoretic questions in computer science.
Roughgarden received his Ph.D. from Cornell University in 2002, under the supervision of Éva Tardos.
Before Blockchains, There Was State Machine Replication (ft. Barbara Liskov and Tim Roughgarden)
Every blockchain 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.
In this episode of First Principles, a16z crypto Head of Research and Columbia professor Tim Roughgarden speaks with Barbara Liskov, MI…
How Bitcoin Rewired a Classic Computer Science Problem (ft. Tim Roughgarden and Ittai Abraham)
Bitcoin often gets credited with inventing trustless consensus. It didn’t.
The problem was named decades earlier — in the world of distributed computing — and researchers spent years studying how machines could reach agreement even when some participants were faulty, adversarial, or corrupt. What…
Leslie Lamport on the Science of Distributed Systems
Before blockchains could reach consensus, Leslie Lamport had to define what agreement even meant when computers fail, lie, or disappear.
In this episode of First Principles: The Scientific Roots of Blockchain Technology, Turing Award-winning computer scientist Leslie Lamport joins Tim Roughgarden…
How Bitcoin Rewired a Classic Computer Science Problem
We're excited to share a special feed drop from The a16z Crypto Show.
In the first episode of First Principles: The Scientific Roots of Blockchain Technology, Tim Roughgarden and Ittai Abraham trace the decades of computer science research that laid the foundation for modern blockchains.
Long bef…
Before Blockchains, There Was State Machine Replication
Every blockchain today relies on replication techniques first developed in the 1980s by researchers who weren't thinking about cryptocurrencies at all.
In this episode, Tim Roughgarden speaks with MIT professor and Turing Award winner Barbara Liskov, one of the pioneers of programming languages, f…
Why markets fail — and how to fix them (ft. Nobel economist Alvin Roth)
Long before crypto made coordination programmable, Nobel Prize winner Alvin Roth was designing markets where coordination could save lives.
In this episode of First Principles, Roth tells the story of how he helped build systems for some of the hardest matching problems in the world, from where d…
Why auction design matters (ft. Nobel economist Paul Milgrom)
Long before onchain markets made mechanism design a daily engineering problem, Nobel Prize winner Paul Milgrom was asking how prices actually form — and how better auction rules could reshape actual markets.
His work helped transform auction theory from an elegant branch of economics into a practi…
The Story Behind RSA: The Invention That Secured the Internet (ft. Turing Award Winner Ron Rivest)
Before the internet could become a place to bank or transact, it needed a way for strangers to know who they were talking to, and whether a message could be trusted.
Turing Award winners Ron Rivest, Adi Shamir, and Leonard Adleman helped invent it.
In this episode of First Principles, Rivest tell…
How Zero-Knowledge Proofs Were Invented (ft. Co-Inventor and Turing Award Winner Shafi Goldwasser)
How can you prove that something is true without revealing why it is true?
That question gave rise to zero-knowledge proofs, one of the most important breakthroughs in modern cryptography. What began as an attempt to solve a seemingly playful problem — playing poker securely over the telephone — …
The 'Useless' Theory Behind Modern SNARKs (ft. Gödel Prize Winner Noam Nisan)
More than 30 years ago, Gödel Prize Winner Noam Nisan helped develop a proof technique that he never expected anyone to use in the real world.
At the center of that breakthrough was the sum-check protocol — an elegant technique that emerged from Noam Nisan’s early work on interactive proofs. At t…
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