he writes parts specifically for the actors he hopes to cast.
Explanation:
One of the most praised filmmakers in Hollywood, Paul Thomas Anderson is keen on working collaboratively with actors and producers, such as Melora Walters and Philip Seymour Hoffman, who have worked together with Anderson and appeared in several of his films.
I believe he tracked how people were getting affected it was the very dirty conditions he took to hospitals and places where people were sick to see if they had ever been exposed to the inhumane conditions that caused Cholera
