I will give you the little joke on classical science zealots that don't believe in QM, that the universe actually can't exist then
I won't bother to write it all out again "ask a physicist" does a reasonable layman job
http://io9.com/5561717/ask-a-physicist-why-dont-collapsing-atoms-destroy-all-matter-in-the-universeThe technical name for it is degeneracy pressure.
The name doesn't translate well to me, that English thing again, but it is not up to me
The section on it in wiki isn't fantastic
https://en.wikipedia.org/wiki/Degenerate_matter One of the funnier things to realize is the reverse situation in a solid.If there is QM degeneracy pressure why doesn't a solid expand infinitely outward
Answer if you get stuck:http://www.physicspages.com/2013/05/28/degeneracy-pressure-in-a-solid/ I hope you have a new appreciation for solids now. I would also hope you roll your eyes when someone says QM doesn't matter when things become large and solid, I have seen a couple of people do that on this forum.
The irony is the "classical physics world" is a delicate balance between various QM forces in remarkable fine tuning.
Our universe without QM wouldn't last very long (a few billionth of a second), yet some want it gone
The memo here is you can't tack QM into a classical world as a bolt on extra strange effect, you would have to completely replace it along with the classical world in a theory of everything.
