CLEAN : French PM Castex visits mask-producing workshop

The video tutorial covers the use of cell phones, a question and demo session, concepts of supply and balance, introspective dominion, and concludes with final thoughts.

What does the phrase 'Cell phones only' imply in the context of the text?

What is meant by 'There's only questions demo here'?

How does the statement 'I think this actually this is supply' relate to the overall message?

What significance does 'Introspective Dominion' hold in the text?

What can be inferred from the phrase 'Will be away from Mark'?