Fiona Weir and Nina Gold talk about the process of casting Room and The Martian
As much as the modern franchise era has introduced a certain algorithmic predictability to Hollywood, the art of making movies is still, at its heart, more an alchemy than a concrete science — and few people in the business have learned that lesson better than casting directors. How do you cast a couple whose chemistry must carry a film? How do you find actors who can embody a particular period? And how do you make sure the kid you’re looking at can actually act?