There are three main drawbacks of the traditional prosthetic: low functionality, low controllability and low cosmesis. When Marco Controzzi and Christian Cipriani developed ‘Azzurra’, a fully functional bionic hand which can be controlled by the human mind, they achieved more than a revolution in prosthetics. Thanks to a bionic interface, not only can an amputee ‘talk’ to a bionic hand, which responds as if it were their own, but the hand ‘talks’ back, offering both tactile sensation and a dialogue with human evolution.