Enablers & barriers to implementing lean that were mentioned

Here is the link of the video. Submit your work after watching this: https://ocw.mit.edu/courses/aeronautics-and-astronautics/16-660j-introduction-to-lean-six-sigma-methods-january-iap-2012/lecture-videos/new-balanceae-plant-tour/ Homework questions (this document is located in the lecture folder) MIT16_660JIAP12_1-4notes.pdf (I will attach it) 1.) Lean terminology, tools or principles that I heard 2.) Enablers & barriers to implementing lean that were mentioned 3.) Benefits from lean implementation that were explained.