The term 'The World According to Arp' refers to the work of the German-French DADA artist Jean Arp. His work was characterized by a playful and humorous approach to art, often incorporating chance and randomness into his pieces. The two crossword solutions, DADA and MONDE, are both related to Arp's work. DADA is an acronym for the DADA art movement, which Arp was a part of, while MONDE is French for 'world', referring to Arp's unique view of the world.