“…On its face, factor three weighs against fair use because the use is of the entire work, but factor three may weigh in favor of fair use where viewing the entire film is pedagogically necessary, and, therefore, the amount taken is justified. Butler (2015) reminds us that the "amount of the work used should be appropriate to the transformative purpose" (p. 33). "[A]s Judge Leval argues, courts may look to the amount taken as an additional indicator of whether the use truly is transformative; taking too much supports an inference that the use is in fact merely substitutional or otherwise illegitimate" (Butler, 2015, p. 33, n. 214, citing Leval, 1990, p. 1123.…”