Thoughtful designs, human computer interaction, interaction design .. why is it so important? You have a product you want to sell to make money. The product must come on the market and it must be advertised, which is an important step. Usually, in order to survive on the market it is important to have a good product that can have a good dialogue with it’s customer. The product must have good design, be ”speaking” in such a way that the client should understand how to use it. Interaction design is this dialogue between the customer and product. A mobile phone is an example of an interactive product where the dialogue between the buyer and the product is important to have a good relationship. The more interactive the product is the more important are the interaction design. But good design includes several things and it’s also good if the product is attractive as Norman understands. Here he talks about beauty, fun, pleasant and emotion.