The whole thread is well worth the read if you want to learn more about Bitcoin and quantum computers.
My overall take-away is it seems like we are still very far away from a CRQC. We’re actually further than I thought before I went to the summit. This belief comes from the observation that we have not yet gotten two logical qubits talking to each other. The quantum computing community seems to think that once we make two of them work, it will be trivial to ramp. There’s an old maxim that the number one rule of distributed systems is to not distribute your systems (connecting a bunch of things that can sporatically fail together and trying to get them for make a coherent system comes with many new problems and complexities). My impression is that the Quantum community is very focused on error correction and hasnt really gotten their arms around what it will take to scale the number of qubits. We looked at a roadmap from IBM that showed them going from 1 to 2 to 100’s to 1000’s over 5 years. I just don’t buy it.
“The fear of Quantum Computing is a bigger risk to Bitcoin than Quantum Computing”. I think that’s right.