[bmcooley]

Could you possibly dive into this? The electron slit experiment shows that superposition exists in a fundamental way in our universe. You can even measure quantum effects with objects as large as buckyballs. Isn't it sort of obvious that a precise mathematical description of a macroscale, emergent system based on objects with quantum and probabilistic effects is always going to be an inaccurate abstraction?

[lmm]

The Navier-Stokes equations are for a smooth fluid and don't capture quantum behaviour or even classical/macroscopic Brownian motion. This is known. It's also entirely beside the point.