1. The document discusses what user interface designers can learn from architecture, including design, solving human problems, and working within constraints. 2. It recommends that UI designers claim the role of architects by learning computer science principles and system designs, and to not be afraid to discard even good ideas if they don't fit. 3. UI designers are also advised to avoid breaking established paradigms that users have become accustomed to, unless changing paradigms is a core part of the product's design.