As you have all been engaging in this sparkling conversation, you've been making your way to Professor Frogbottom's office. As you make your way along the corridors where the faculty offices are located, you catch the odd glimpse of a demonstration being rehearsed for class, and even a few experiments being prepared (although this is generally not done in the faculty offices because of the annoying (and very messy, to say the least) consequences of failure, some of the more skilled professors are permitted to work through the initial steps here, before moving to a more secure area to have students complete the experiment). At last, you arrive at a small door (4 feet tall) with a sign affixed that says: "Herschel Frogbottom, 15th Degree Brewmaster" Knocking on the door, you hear, "Yes, yes, yes, come in, come in, but please don't breathe if you can help it!" The taller among you are required to stoop down to fit both through the door, and into the room beyond, which only has a ceiling height of 5 and one-half feet. Professor Frogbottom, the cheerful halfling, gives you all a beaming smile and continues to mix up a most foul-smelling concoction on his work table. He sees the looks of disgust on all your faces, and twitters with laughter. "Not to your liking, is it? Sorry about that. How may I help you children?