[searealist]

Coffee grounds aren't neodymium magnets.

[stouset]

No, but the clumps in question are small and are unlikely to be broken up by gentle stirring.

[searealist]

You are an expert on this new concept you just learned of the same day.

[stouset]

I did read the paper, and I am generally familiar with the physics of charged particles.

And of course I caveated everything with “likely” and “unlikely”, to hedge against misunderstanding. What else would you like me to do?