"We've built a great new way to design physical structures."

"So what? The existing ways work just fine."

"We designed and built a rocket engine in two days."

However, even in the rocket field, there's a "design, simulate, build, test" cycle. They can do two of those steps in effectively 0 time and with significantly lower cost.

Moreover, it looks like the design has incremental feedback from something akin to simulate.