This document discusses cyborgs, which are humans enhanced with both biological and technological parts. It provides a brief history of cyborgs, including how the term was coined in 1960. It then describes different types of cyborgs, such as those meant for convenience or to replace damaged body parts. The document outlines some applications of cyborg technology in medicine, the military, and sports. It notes advantages like returning function and increased abilities, as well as disadvantages like expense and possible loss of humanity. In conclusion, it suggests that while cyborgs have downsides, their future intelligence could help protect humanity if needed.