Gizmodo:

Much the way emotions live inside every person, a script lives inside every movie, helping shape it, direct it, give it life. Scripts form a superstructure around which films are built. But the execution of a scene can diverge wildly from what’s in the script, for better and for worse.

In a new video released by Pixar, viewers can compare the script-to-screen execution of one of Inside Out’s most memorable scenes. It’s a master class in how direction and acting can give a scene strength it doesn’t have on the page.

Even those of us who love movies may not realize the process from page to screen. I’ve read lots of movie scripts that don’t have any real excitement to them. It’s not until they become film that the beauty is revealed.