Maybe something like this could prove useful against the enemy in battle? In addition to helping "us" understand anesthetics, it could help us figure out new ways to induce pain in the enemy at a distance.
Absolutely. Once you understand how a thing works, you can design a weapon to destroy or at least make it non functional.
Maybe we really could create phasers that could set to stun!
Can you imagine a stun bomb set off in a "bad" neighborhood in Iraq before our guys move in?
Check out "The Shout" by Robert Graves