Footfalls above "we would see the tracing on the stage floor of a tremendously elongated variation of the figures 8 turned on its side … the mathematical symbol for infinity." Beckett was also indebted to the French psychologist Pierre Janet for his conception of hysterical behaviour. In his overview of Janet's work, Robert Woodworth in his "Contemporary Schools of Psychology", a work Beckett read, pays particular attention to Janet's description of the "hysterical paralysis of one arm", which Beckett incorporated, into May's posture. There are a number of analogies between "Footfalls" and Janet's work with a patient called Irène: He lists
Number 1 to Infinity clarity, and agility with ease". "#1 to Infinity" debuted at number 29 on the US "Billboard" 200 chart on June 6, 2015, selling 15,000 copies in its first week, marking the ninth highest debut of the week and the tentieth best-selling album of the week. It became her twentieth album to make the chart. Her eponymous album had debuted at number 80 twenty-five years prior in 1990 and later became her first of six number-one albums in 1991. "#1 to Infinity" peaked at number 2 on the Top R&B/Hip-Hop Albums chart<ref name="Top R&B/Hip-Hop Albums"></ref><ref name="Top R&B/Hip-Hop Albums Chart History"></ref> and