Dedication

To my father, Eddie (r.i.p), who inspired memy tointerest explorein computers in the use of computersmid-80s and passed on his dream of going to MIT.
To my mother, Chichi, who alwaysinstilled emphasizedin me the value and joy of reading.
To my wife, Liliana (a.k.aaka Lilo), who gives meaning to the thingseverything I do (always) and feelstakes proudpride ofin memy achievements (almost always).
To Domingo, Teresa, and Francisco, who are our greatest challenge and our happiest adventure.
To my uncle, Jorge A. Rizzi (h),Rizzi, who gaveinvited me myto first jobwork at SADOI, twice.where I learned to program with LOGO .
To Jorge A. Rey Valzacchi, a pioneer in integrating technology into education in Argentina.
To Rosa Kaufman, a pioneertrailblazer of LOGO in education in Argentina.
To my friends, who never quite understood what myI workdo isfor about,a living, but loveappreciate meit nonetheless.all the same.