While an excellent start, the report doesn't go far enough, as I have been explaining to the US intelligence community , National Research Council, DARPA, and other organizations internationally. The impact of neural and physical human enhancements is more far-reaching than that, such as to the question of torturing the enhanced. Other issues, as described below, pose real challenges to military policies and broader society.

Why Enhancements?

Technology makes up for our absurd frailty. Unlike other animals, we're not armed with fangs, claws, running speed, flight, venom, resilience, fur, or other helpful features to survive a savage world. We naked apes couldn't survive at all, if it weren't for our tool-making intellect and resourcefulness.

And therein lies a fundamental problem with how Homo sapiens wage war: As impressive as our weapon systems may be, one of the weakest links in armed conflicts-as well as one of the most valuable assets-continues to be the warfighters themselves. Hunger, fatigue, and the need for sleep can quickly drain troop morale and cause a mission to fail. Fear and confusion in the "fog of war" can lead to costly mistakes, such as friendly-fire casualties. Emotions and adrenaline can drive otherwise-decent individuals to perform vicious acts, from verbal abuse of local civilians to torture and illegal executions, making an international incident from a routine patrol. And post-traumatic stress can take a devastating toll on families and add pressure on already-burdened health services.

To be sure, military training seeks to address these problems, but it can do only so much, and science and technology help to fill those gaps. In this case, what's needed is an upgrade to the basic human condition. We want our warfighters to be made stronger, more aware, more durable, more maneuverable in different environments, and so on. The technologies that enable these abilities fall in the realm of human enhancement, and they include neuroscience, biotechnology, nanotechnology, robotics, artificial intelligence, and more.



While some of these innovations are external devices, such as exoskeletons that give the wearer super-strength, our technology devices are continually shrinking in size. Our mobile phones today have more computing power than the Apollo rockets that blasted to the moon. So there's good reason to think that these external enhancements someday can be small enough to be integrated with the human body, for an even greater military advantage.

The use of human enhancement technologies by the military is not new. Broadly construed, vaccinations could count as an enhancement of the human immune system, and this would place the first instance of military human enhancement (as opposed to mere tool-use) at our very first war, the American Revolutionary War in 1775-1783. George Washington, as commander-in-chief of the Continental Army, ordered the vaccinations of American troops against smallpox, as the British Army was suspected of using the virus as a form of biological warfare. (Biowarfare existed for centuries prior, such as in catapulting corpses to spread the plague during the Middle Ages.) At the time, the Americans largely were not exposed to smallpox in childhood and therefore had not built up immunity to the disease, as the British had.