話是這麽說.但有幾個國女有這麽強大的. 我這麽說其實是從經濟的角度

講的.

In other words, every member of a family/team has its position and functual role.  Duplication will result in productivity issue. 

In a work envriment, I would never hire a Jack of trades.   Jack is basically useless when it comes to solving complex problems.