Christopher Nolan has explained why he cast rapper Travis Scott in his forthcoming movie  The Odyssey . The upcoming blockbuster, an adaptation of the epic Greek poem by Homer, sees  Matt Damon lead an all-star cast telling the story of Odysseus and his journey home from the Trojan War. Tom Holland also plays Telemachus, Odysseus’ son, while Anne Hathaway ,  Zendaya , Lupita Nyong’o,  Robert Pattinson ,  Charlize Theron , Benny Safdie,  Elliot Page , Samantha Morton and Mia Goth will also star. But back in January in a teaser trailer for the movie , Holland’s Telemachus is seen interrupted by Scott, who silences a crowded hall and warns of impending war. “A war, a man, a trick – a trick to break the walls of Troy,” he announces, as the trailer teases images of the great Trojan War. “It burning, screaming to the ground.” Now, Nolan has spoken about why he cast the rapper in a new interview with Time magazine.…