If a proverbial Martian were watching the flow of electrons between East Asia and North America, he would probably notice robust two-way traffic. But if he looked inside the data packets, he would see very different content.
Un proverbial marciano que observara el flujo de electrones entre el este de Asia y América del Norte advertiría probablemente un intenso tráfico bidireccional; pero si mirara dentro de los paquetes de datos, vería grandes diferencias de contenido.