CLEAN : Power outage paralyzes major Paris train station

The video discusses the concept of seriousness, emphasizing its importance and implications.

What does the speaker mean by saying 'Yes, I'm serious'?

In what context might someone say 'Yes, I'm serious'?

How can tone of voice affect the meaning of 'Yes, I'm serious'?

What are some possible reactions to someone saying 'Yes, I'm serious'?

Why might someone need to clarify their seriousness in a conversation?