One would think that such a development would be hailed by all those pacifists who supposedly care so much for the preservation of human life. Instead we have eminent scientists coming up with these nuggets of wisdom:
Andrew Rice, a consultant in pain medicine at Chelsea and Westminster Hospital in London, said: "Even if the use of temporary severe pain can be justified as a restraining measure, which I do not believe it can, the long-term physical and psychological effects are unknown."
We also get this extremely useful comment:
According to John Wood of University College London, an expert in how the brain perceives pain, both Richardson and Cooper and all those working on the PEP research project should face censure because any weapon resulting from the programme "could be used for torture."
I would also note that this seems to me (though I have no technical knowledge in the matter) to be the ideal weapon against insurgents and terrorists in guerrilla warfare situations, as one of their strategic advantages with respect to armies is that they are difficult to identify and try to dissimulate themselves among (usually) innocent civilians.