I don't think I understand any of this. You have to bury a few zillion tons of water in a pitch-black salt mine a mile underneath the surface, and run detectors that see a dim flash of light when one of these hits a water molecule, right?
How is that in any way directional? Or is there a way to compile an image from this without directionality?
How is that in any way directional? Or is there a way to compile an image from this without directionality?