Yorke, a new father, adopted a strategy of "distilling" the political themes into "childlike simplicity". He took phrases from fairy tales and folklore such as the tale of Chicken Little, and from children's literature and television he shared with his son, such as the 1970s TV series "Bagpuss." Parenthood made Yorke concerned about the condition of the world and how it could affect future generations. Jonny Greenwood felt Yorke's lyrics expressed "confusion and escape, like 'I'm going to stay at home and look after the people I care about, buy a month's supply of food'."