Do we need quantum-classical correspondence?

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Now we can solve TDSE (time-dependent Schrodinger equation) to obtain the quantum results.
I wonder why lots of people still do some works on quantum-classical correspondence?
 
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Can you describe the motion of planets by TDSE? No? That's why.
 
Demystifier said:
Can you describe the motion of planets by TDSE? No? That's why.

Yes I can't.
But quantum-classical correspondence is investigated in the micro-world.
 

Thread 'Is a table levitating possible, even at a minuscule probability?'

I am not sure if this falls under classical physics or quantum physics or somewhere else (so feel free to put it in the right section), but is there any micro state of the universe one can think of which if evolved under the current laws of nature, inevitably results in outcomes such as a table levitating? That example is just a random one I decided to choose but I'm really asking about any event that would seem like a "miracle" to the ordinary person (i.e. any event that doesn't seem to...
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