The ability to create and use tools to overcome environmental challenges is one of the most distinctive traits of human beings, since no other species has developed such a deep and reciprocal relationship between biological evolution and technological progress. Human survival and advancement have long depended on the brain’s capacity to imagine new solutions, and as cognitive abilities have grown, so too has the sophistication of the tools we create.

Within this evolutionary trajectory, human augmentation emerges as a natural and crucial extension of tool development. By enhancing physical, sensory, and cognitive capabilities through advanced technologies, it allows humans not only to compensate for limitations but to expand their potential beyond natural boundaries. The study of human augmentation provides insights into how humans can interact more effectively with technology, opens new possibilities for performance and well-being, and helps shape future innovations that can profoundly impact both individuals and society.

For human augmentation to move beyond controlled laboratory settings and into real-world applications, several fundamental challenges must be addressed. One of the key issues is whether users can effectively integrate, represent and control extra artificial limbs without interfering with existing motor functions. Furthermore, providing meaningful sensory feedback from the augmentative device remains a major hurdle: information must be encoded in a way the brain can interpret, while balancing bandwidth and cognitive load, and ensuring that artificial feedback does not conflict with or overshadow natural sensory inputs.

Beyond sensorimotor challenges, practical limitations also play a significant role: current devices, such as supernumerary robotic limbs, are often bulky, heavy, and difficult to wear for extended periods, limiting their usability outside controlled environments. At the same time, prolonged use of robotic augmentation may affect the user’s body representation, raising important questions about how the brain adapts to non-anthropomorphic extensions of the body. The long-term consequences of altering one’s body schema in this way remain largely unknown, especially when the added limbs do not conform to natural human morphology.

Human augmentation has the potential to impact not only scientific, technological, and industrial progress, but also many other aspects of our lives, extending into our everyday routines and personal experiences. Its influence could go far beyond traditional domains of application, spreading into fields such as art and music, and gradually becoming pervasive not only in what we do, but in how we perceive ourselves and imagine our lives. Just as it is now almost impossible to envision a world without smartphones, the internet, or modern transportation—and equally difficult to imagine ourselves living without them—it is worth asking whether augmentation could one day reach a similar level of integration. If so, what conditions would enable such a transformation, and how deeply could it reshape our identity, capabilities, and interaction with the world?