Mastery is easy to achieve using a computer, because a computer doesn't get tired of showing you the same video five times. And it doesn't even get tired of grading the same work multiple times, we've seen that in many of the examples that I've shown you.
Es fácil dominar un tema usando una computadora, porque esta no se cansa de repetir el mismo video cinco veces, ni siquiera de calificar una actividad muchas veces, como les he mostrado en muchos de los ejemplos.