Is fraught with ethical dilemmas:
On the horizon is the expanding field of brain-digital interface. Devices have already been built that use brain activity to control basic machinery, such as a prosthetic limb. This can be achieved either through implantable devices that directly interface with the brain, or external neuro-modulation, perhaps integrated into a helmet. As this technology improves, military commanders, or even smart computer algorithms, may one day be able to digitally monitor soldiers’ cognitive function. Such algorithms could potentially even intervene under certain circumstances, for example, by down regulating stress pathways for operatives in tense and isolated settings. With soldiers’ very minds being controlled to some extent by a digital device, the question of where we draw the line between man and machine becomes blurred.