This sounds creepy, but human performance assessment and enhancement are already common in the US military. Elite special operations units, for example, regularly use these kinds of technologies to assess candidates and identify the ones who are predisposed to bearing the cognitive and physiological loads of close-quarters combat, where individuals must understand, decide, and act precisely and repeatedly in split seconds. Similarly, enhancing human performance has become routine in the US military. Pilots, for example, regularly take modafinil and dextroamphetamines, central nervous system
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