One of the most interesting concepts in the book was "efference copies." The idea is that your mind needs to distinguish between stimulus that you caused by vol

One of the most interesting concepts in the book was "efference copies." The idea is that your mind needs to distinguish between stimulus that you caused by voluntary action (moving your arm) versus stimulus that the environment causes (your arm being moved by something else), so you send these "echos" of your voluntary actions back to your brain and this is possibly where your sense of self comes from.