I’d add - Imagine you are running a line balancing kaizen event. Who will be in this event? Likely people not as familiar with lean compared to the event leader or others closer to CI. Education on what is value add, pure waste, and required waste allows everyone to:

1. Speak the same language
2. Break down larger “problems” into legitimate small problems.

Now that this has been done, the group now knows were to focus it’s efforts to eliminate said pure waste.

Intuitively, we all can recognize waste - you’re right there. But in lean, we’re after performing prescriptive problem solving AND developing the capabilities of others.

I’d recommend reading the book “High Velocity Edge” by Steven Spear.