All of the nodes that we are about to cover can be described as very useful, but they are the types of asset that don't receive enough praise as they require a certain intent from the user. Think, for example, about one of the topics that we'll talk about in this chapter—adjusting the quality of the textures we use based on the camera focus. Examples such as this one are very specific, and they wouldn't make the cut for any introductory course for that same reason. However, they can become essential once our projects grow, and they can make the difference between a novice approach toward materials and a more professional one. They can help us at different levels, from achieving specific effects to making our projects more efficient. Whatever the case, it'll be great to have them as our allies as they can help us tackle problems from a different perspective:
