麻豆约拍

The world's major consulting firms make an estimated trillion dollars a year, directing governments and businesses on how best to govern.

But the economist Mariana Mazzucato argues that outsourcing the brain power of governments to private firms is a dangerous trend.

Ed Butler asks her why she thinks it isn't money well spent.

(Picture: Mariana Mazzucato. Credit: Getty Images)

Presented and produced by Ed Butler