>>272677114
Brainwave entrainment is a thing, I don't think it's absurd that some wave of energy could cause entrainment. Full on knocking out would involve disrupting brain waves.
We know publically about using magnetic extracranial techniques to alleviate mental illness.
What if we crank that up to 11?
And the LSD isn't just in the water, and LSD is basically codename for any experimental drug.