Normally, you can't with any assuredness. The serial number itself won't normally reveal the manufacturer.

Having assertive wit means being clever and sharp in your communication, while also being confident and direct in expressing your thoughts and opinions. It involves a balance of humor, intelligence, and self-assuredness in your interactions with others.

The best thing about being my age is having a better understanding of who I am and what I want in life. I have gained experiences that have shaped my perspectives and choices, leading to a sense of self-assuredness and confidence.

In "Pygmalion," Higgins views Freddy as a lovestruck and naive individual. He sees him as infatuated with Eliza and lacking the self-assuredness and independence that Higgins values. However, Higgins also underestimates Freddy's capabilities and potential for growth.

This saying implies that a person who confidently keeps their hand in their pocket exhibits a sense of arrogance or self-assuredness throughout the day. It suggests that this posture projects a sense of superiority or confidence in one's abilities.