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Positions, energies and existence of particles start to become statistical as we get smaller. Most of the things we derive comfort from seem to go out the window.
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Most likely this is because the theories that were developed in Newtonian Physics were designed to make us feel comfortable and fit with our practical perceptions of the world in the first instance.
And they appeared to work for the most part too. I'm not sure for example how much Quantum Physics was required to achieve the moon landing.
The fact that what appears to be common sense starts to fall over at relativistic speeds and at the quantum level has never troubled me much. I only have one component in my workshop I call "quantum mechanical", the Tunnel diode, but I know everything else is too, but for practicalities sake, I just block that thought out and it keeps me sane and "comfortable" and I have never had to resort to string theory to repair an instrument.