LOL Sam it´s not that Mariah Carey was smart enough to write her own material. It´s that the girl is so talented that she wrote her own material! That ridiculous statement can be applied to Beyonce or Rihanna, who don´t write a damn thing but have the nerve to say and pay for writing credits, so that they can earn money once it´s all over commercially for them. At least, there are still real songwriters like Mariah and people who don´t write but are honest about it like Celine Dion and many more. And then some people ask why music industry is laughable nowadays...