Si todos debemos movernos para sobrevivir, vale la pena preguntarse: ¿qué factores de nuestro entorno nos impulsan a movernos y cuáles, por el contrario, nos detienen? ¿Por qué algunas personas tienen la oportunidad de moverse hacia donde quieren y otras no? ¿Por qué ciertas sociedades evolucionan y otras no? Para responder a estas interrogantes, los autores del libro estudiaron los códigos culturales y el comportamiento Bio-Lógico de 71 países para desarrollar un índice de que permite medir la movilidad social dentro de estas sociedades.Andrés Roemer y Clotaire Rapaille señalan que las culturas más exitosas son aquellas que han sabido preservar los mejores aspectos de su tradición, al mismo tiempo que han estado dispuestas a innovar y buscar nuevos horizontes. Se trata de sociedades abiertas al cambio y sin temor al statu quo. Otra clave del éxito evolutivo de las sociedades es el equilibrio entre el aspecto biológico (determinado por cuatro factores: supervivencia, sexo, seguridad y superación) y el aspecto cultural. El reto, concluyen los autores, es aprender a armonizar nuestros instintos (nuestro cerebro reptiliano) con nuestras emociones (nuestro cerebro límbico) y nuestra lógica (el neocórtex).ENGLISH DESCRIPTION If we all know we must move to survive, shouldn’t we ask ourselves which factors in our environment propel us and which halt us? Why do certain societies evolve while others don’t? In this book, Andrés Roemer and Clotaire Rapaille point out that the most successful cultures are those that are not afraid of the status quo: they have learned to preserve the best qualities of their traditions while being open to innovation and to uncovering new horizons. Another key to the success of these societies is the equilibrium between biological and the cultural aspects. The challenge is to harmonize our instincts, our emotions, and our logic.

    Senator from Massachusetts and bestselling author offers a passionate, inspiring book about why our middle class is under siege and how we can win the fight to save it Senator Elizabeth Warren has long been an outspoken champion of America’s middle class, and by the time the people of Massachusetts elected her in 2012, she had become one of the country’s leading progressive voices. Now, at a perilous moment for our nation, she has written a book that is at once an illuminating account of how we built the strongest middle class in history, a scathing indictment of those who have spent the past thirty-five years undermining working families, and a rousing call to action. Warren grew up in Oklahoma, and she’s never forgotten how difficult it was for her mother and father to hold on at the ragged edge of the middle class. An educational system that offered opportunities for all made it possible for her to achieve her dream of going to college, becoming a teacher, and, later, attending law school. But now, for many, these kinds of opportunities are gone, and a government that once looked out for working families is instead captive to the rich and powerful. Seventy-five years ago, President Franklin Roosevelt and his New Deal ushered in an age of widespread prosperity; in the 1980s, President Ronald Reagan reversed course and sold the country on the disastrous fiction called trickle-down economics. Now, with the election of Donald Trump—a con artist who promised to drain the swamp of special interests and then surrounded himself with billionaires and lobbyists—the middle class is being pushed ever closer to collapse.Written in the candid, high-spirited voice that is Warren’s trademark, This Fight Is Our Fight tells eye-opening stories about her battles in the Senate and vividly describes the experiences of hard-working Americans who have too often been given the short end of the stick. Elizabeth Warren has had enough of phony promises and a government that no longer serves its people—she won’t sit down, she won’t be silenced, and she will fight back.