Rhythm thts true, caste system and gender are two different catagory but I used them at same place becasue those first two lines are very popular in nepal when the discussion of caste system comes. There might be research going on between the genders but always research comes with suvey and its analysis. So I guess the opinion comes in this thread obviously represents survey. It depends upon how people intrepret the things but different people have different opinion and experiences.