The practice is said by some to be a reaction against some of the modern schools of architecture, such as Modernism and their apparent opposition to nature and organic form. Commenting on the movement away from these rigid and artificial design trends, Susannah Hagan, in her book Taking Shape, has this to say: "The oppositions between culture and nature, so importantly and brutally drawn up by modernism, are dissolving again, not in a return to what was, but a transformation of it...The division between the living organism and the machine continues to collapse."[2]