[humanfromearth]

Maybe gravity is not a force in a quantum sense, but just geometry of spacetime in the presence of mass? Maybe there is no graviton and no quantum theory is needed to explain gravity.

Is there any strong evidence that gravity is following quantum mechanics? Maybe a real theoretical physicist can explain.

[nightcracker]

Considering that gravity is produced by particles who's behavior is quantized, there is essentially no other option than to assume gravity must be as well.

[humanfromearth]

Do we know for sure? I mean I don’t think the graviton has been observed in action yet. Let me ask another question: is space quantized?