San Andrés Tetepilco, Ciudad de México, March 3rd, 2001. (L to R) José Negrete, Jaime Lagunez, Pedro Pablo González, and Carlos Gershenson. At the party after the professional exam to obtain the degree of Computer Engineer by the last one. Curious fact: the people at the left of the picture are teachers of the people to the right of the picture, so I was student of my advisors, everyone was student of José Negrete, and Pedro Pablo of Jaime.