AFAIU, it's a liquid, and it does flow, it's just that it flows so slowly it's almost impossible to notice https://en.wikipedia.org/wiki/Pitch_drop_experiment

AFAIU, it's a liquid, and it does flow, it's just that it flows so slowly it's almost impossible to notice https://en.wikipedia.org/wiki/Pitch_drop_experiment https://en.wikipedia.org/wiki/Pitch_drop_experiment