[dogleg77]

Fair point. I looked at the addendum, and it doesn't really address the critiques. They show an "ablation study" on one additional circuit without describing how big it is, etc. The few numbers they give suggest that this circuit is unlike those in the Nature paper: possibly a newer technology (good) but much smaller in the total length of wires and hence components (bad!). They are trying to debunk the Kahng work, but they aren't addressing many other complaints. Without showing results on public benchmarks in a reproducible way, they are just rehashing some excuses. Maybe their results are no good, maybe they stopped working on this. But with claimed runtimes under 6 hours, they don't need 3 years to add thorough benchmarking results. Anyone who designs competitive chips is doing benchmarking, but Google isn't. Draw your own conclusions.