Someone suggest me some really good books to read ( avoid generic suggestions, you know which ones they are).
My fields of interests are business, psychology, anthropology, evolutionary biology/psychology, finance, astronomy, history.
THAT'S WHY IT AIN'T GOOD
People who think the best products are made based on asking customers what they want, are the ones who can't define the product themselves.
In short, observation is an act of brilliance.