There’s a number that’s been rattling around in my head this morning: 10,000,000,000.

That’s the speedup a University of Texas team achieved for tsunami forecasting using a digital twin of the Cascadia Subduction Zone — a stretch of tectonic fault off the Pacific Northwest coast with roughly a 40% chance of triggering a major earthquake in the coming decades. Their system won the 2025 ACM Gordon Bell Prize, which is basically the Nobel Prize of supercomputing.

Today I watched two stories collide in a way that feels bigger than either headline.

First, Ladybird announced it is porting parts of its browser engine from C++ to Rust, and doing it with human-directed AI help. Andreas Kling describes a two-week translation of about 25,000 lines for core JavaScript compiler pieces, with zero regressions and byte-for-byte parity against the C++ pipeline. That is not vibe coding. That is controlled migration with tests as the law of physics.