Luther saw Aria waving to him and sitting next to his brother, Caes. So he waved back and said "Hi there, Aria, Caes. How are you?"

When Professor Carton started his lecture with a question, Luther thought for a while. The question seemed like a trick question for some reason. 'The false bottom is obviously something unusual. However, is it for vanishing or conjuring? Or something else entirely?' Then he raised his hand and spoke, "Professor, I assume you are asking for a use other than making the wearer look absolutely awesome, especially me in my opinion, so I think the hat is used for vanishing and conjuring things with some sleight of hand. While I know that we can do those things with magic, I don't know the spells sir, sorry.". After pausing for a moment, he added slightly unsure "I also have heard of expanded bags, so the inside of the hat might be bigger than the outside, maybe. So, it might look like the object is vanishing or conjured out of thin air."