Philip Hensher reminds us of literature's advantages over film, with Bleak House as case in point:

"It isn't, moreover, just a question of leaving out wonderful little corners of plot, or irresistible characters. It's really a matter of not doing a tenth of the things a book does. A book can switch into historical narration, dense description, authorial comment. It can, as Bleak House does, alternate between past tense and present tense–it's an extraordinarily sinister moment when Richard suddenly disappears from Esther's narrative, and appears in an anonymous present-tense section. A film can't do any of this; it is stuck, forever, in the most banal of a novel's modes, the narration of action and the transcription of dialogue."