@davidaugust strong disagree.
People often spend years being taught to read, but I wouldn't say the UI of books is bad because of that; it's just not optimized for beginners. Once you become a proficient reader, it's often a more convenient and efficient way to access knowledge than many competing information retrieval systems.
There is a place in this world for interfaces optimized for expert use.
@tobyink My favorite example of this is a violin.