a) I'd sign up as one of the earliest testers We already use devices in our everyday life to supplement our senses. For example glasses for correcting eye sight, hearing aids for correcting hearing loss. You could even argue that the automobile is an augmentation that we wear to provide a more efficient method of transporting ourselves. Have these augments internalized is the next natural step in my opinion. Just because something is not biological does not make it wrong to have inside the body if it provides a definite advantage which out ways any detractors.