This is hands down " THE " best video on the subject ! This term is use in so many cases that it is hard to have a solid foundation around it and this make absolute sense with the Robert Mckee use of the term. I would like to suggest to make another video with a summary of this one but a pratical one with the script from the Avengers with maybe the thor / captain america vs thanos scene so we can see action beats and maybe from the same script another scene with more dialogue so we can see dialogue beat that would be 🔥🔥🔥
I also mention to my acting students that where there are beat changes, is where they might forget their line. The change of subject breaks the thought process. I have them create a mental transition between the change of subject. Example: Talking to a friend about her family. I change the subject to ask about her job. Mental transition: she mentioned her mother which reminded me that my mom wanted to know if she still worked at the same insurance agency.