I keep my mind active and coming to school three times a week, and walking up and down the steps, that kept me physically able."
VOA: special.2010.07.16
She brought to mind all the steps she took to accomplish that success (outlining her key achievements, doing research about what others at her level are earning, assessing the obstacles to her getting more money, becoming clearer about the value she brought to the table, etc.).
However, until Fred Hoyle applied his mind to the question it looked as though many of the intermediate steps might be too unstable to account for the quantities of those elements that are observed.