Project Hail Mary author says the movie improved on his book in one way

Book-to-screen adaptations often radically alter a book’s plot — sometimes so much that the original story is practically unrecognizable. Some authors are philosophical about those changes. Others get vocally mad about them. But Project Hail Mary and The Martian author Andy Weir has an unusual take. Weir tells Polygon that screenwriter Drew Goddard and directors Phil Lord and Christopher Miller improved the story in one specific way.