Private organizations remain concerned, however, because documentation that supports the testing and legal reviews is classified. There's no way to independently verify the Pentagon's claims, said Stephen Goose of Human Rights Watch in Washington.
"We think that any time you have an emerging technology that's based on novel physical principles, that this deserves the highest level of scrutiny," Goose said. "And we really haven't had that."
So, basically what he's saying is, we don't know how harmful this is, so we shouldn't use it. As opposed to the bullets the troops are using now. Those are OK because we
know how harmful they are (lethal). Heh, good enough reason to not try the non-lethal weapon.