As scientists restore sight to a blind man, Richard Gray explains how human beings can now be rebuilt from top to toe with artificial parts.

When dusk had fallen, I should experience the double delight of being able to see by artificial light which the genius of man has created to extend the power of his sight when Nature decrees darkness.

Artificial distinction which obfuscate the law and complicate its practice should be abolished but the real difference should never be lost to sight.