answer:We have multiple minds in our heads. Sometimes one is more ascendant than the others, and sometimes one mind can be so ascendant, that you can’t even process any input from your senses. You have multiple minds within you, and they don’t always agree. So sometimes when you find you can’t make up your mind, it’s because your minds have a fairly even split on what to do. Other times, you are focused on one thing, and your focus is so strong, you can’t hear or even see anything other than what you are focused on. It’s pretty common. Most people would kill to be able to focus that well, because a lot of people feel scatter-brained. That’s where their many minds compete for attention and no one mind can take over the brain’s resources.