1.  Boys live in a hierarchical world where they are on guard to protect themselves from being put down and pushed away, so they prefer working together to talking for a long time.

2.  Boys live in a hierarchical world, which force them to be more rational and focus more on the tangible things.

3.  But boys live in a hierarchical world.

4.  But boys live in a hierarchical world, where talk maintains independence and status.

5.  In contrast with this, boys live in a pretty hierarchical society, in which talk maintains independence and status, therefore , they're obliged to avoid a subordinate position when talking.

6.  But boys live in a hierarchical world, where talk maintains independence and status.

7.  Therefore, boys usually live in the world where talk maintains independence and status so that they are afraid of being put down and pushed away.

8.  Instead, boys live in a hierarchical world, in which they need to fight to maintain their independence and establish their status .

9.  In the famous novel, The Prince and the Pauper, two boys living in the city looks exactly the same, but one is the noble prince in the palace, the other is a pauper who has no sufficient food to eat.

10.  But boys live in a hierarchical world, where talk maintains independence and status.