The reason it's different is that, just in the past few years, our machines have started demonstrating skills they have never, ever had before: understanding, speaking, hearing, seeing, answering, writing, and they're still acquiring new skills.
La razón por la que es diferente es que solo en años recientes, nuestras máquinas han empezado a mostrar habilidades que nunca antes habían mostrado: entienden, hablan, escuchan, ven, responden, escriben... y no dejan de adquirir nuevas.