That brings us back to requiring the user to present ID to the camera while doing a live-selfie, that would be a honest, belt-and-suspenders approach that's worth a look. Thanks for doing all the heavy lifting.
I noticed they also seemingly have a very difficult time managing to collect your chat logs for export/download...or rather, acknowledging that such a request was even made.
Honestly, for practical engineering purposes not that much. The Navier-Stokes equations are an approximation for a mathematically ideal in-compressible fluid. Even ignoring compressibility, physical fluids in the real world are not continuous fields since they are composed of discrete molecules. However, for that small class of problems where an analytic solution can be found, then it means you can be confident in the answer (it won't blow up to infinity), and that there are no other alternate solutions to the same problem.
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