Today, Nora is visiting a massive department store downtown to buy a special wedding present for her best friend. She walks into the home section and feels completely shocked because there are too many options to choose from. Nora wants to find a very useful item, but navigating through the long corridors is a big challenge. First, she looks at small counter electronics like a modern toaster and a high-speed blender for the kitchen. Next, she walks to the cleaning department and tests a powerful, intelligent robotic vacuum cleaner on the carpet. After that, she moves to the heavy appliances area to check a giant smart fridge with a touch screen. She also examines a professional stainless-steel oven and a fast microwave to heat food in a few seconds. Finally, she sees a spectacular automatic coffee maker that prepares delicious cappuccinos with a single button. Nora selects the coffee machine, pays for it, and leaves the store feeling very happy with her excellent choice.