out of all the treatments, i believe depression, anxiety, and mood should be heavily emphasized for BCI. if we can change the human brain in a way that gets rid of these kinds of problem it can help everyone in the world in an extremley significant way. our brains were born with a law that "good cannot exist without bad" and the only possible way to break this law is with BCI. we are neutral creatures in terms of happiness and suffering. i dont view humans to be any happier than monkeys or rats, but with the technology that we have, we can make everyone normal/happy and get rid of this evil law in the brain. technology hasnt made us happier but they are very helpful for the path to becoming happier once we fix the problem in the brain. if you compare a person who sits outside in cold weather with a person sitting in a room with normal temperature with video games, both people will suffer just as much as each other. moving someone from the cold weather to an indoor environment will cause the person to suffer with other problems. this is because of the law that was built in our brain. for ex, the person outside may complain about the annoying feeling of being cold and the person inside may experience depression or other problems.