Following up on the (brief) discussion in the Hercules video about how three act structures create a conventional narrative in Hollywood movies.
A screenplay having three acts is not just arbitrary, nor is it a myth - some of your favorite movies use it, and here's why it works.
Cited articles:
Film Crit Hulk - "The Myth of the Three-Act Structure" http://birthmoviesdeath.com/2013/12/11/hulks-screenwriting-101-excerpt-the-myth-of-3-act-structure
The de-Hulkifier: http://simonganz.com/2013/04/the-dehulkifier/
Todd Vanderwerff - "The biggest problem with modern blockbusters, explained by Independence Day: Resurgence" http://www.vox.com/2016/6/29/12046656/independence-day-resurgence-bad-review-no-second-act-problem
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