A U.S. National Football League charity campaign once used the slogan, “strong legs run so weak ones can walk”. I recalled this during a visit yesterday to an Israeli startup named Argo, launched by Dr. Amit Goffer. Argo’s product is called ReWalk, and it is an exo‐skeleton (outside‐the‐body skeleton) which, with electronics, enables those who cannot walk to stand on their own two feet and walk at 2 km. per hour, a good clip.