3 police killed in blast; 4 bodies found; police raid; funeral

The video tutorial introduces the concept of doubling, explaining its basic principles and applications.

What does the phrase 'I did.' imply in a conversation?

How can the phrase 'I did.' be interpreted in terms of personal achievement?

Discuss the significance of brevity in the phrases 'I did.' and 'Double.'

In what context might someone say 'Double.'?

What might be the emotional tone behind the word 'Double.'?