I think we are saying the same thing but in different ways.
But as to your last line, while it is not brain surgery some things are counter intuitive. I had the pleasure of following 1100 people for about 6 years, 5 years full time. I didn't realize at first what being able to actually follow the development of hundreds of people could show. A couple trends I saw led me to have a few different ideas that common sense wanted us to believe. Some things are just as they appear. Some are not. Some of those that are counter intuitive really don't matter that much. And a few of those that are counter intuitive actually matter for particular processes in the brain. Meaning you have to get a bit geeky and think about it a bit past common sense because failure to do so can really screw a shooter up.