This video introduces the concept of "mainframe" design in permaculture, emphasizing the importance of carefully considered, long-term planning before implementing smaller elements. It outlines a hierarchical approach to design, prioritizing water first, then access, and finally structural positions. The discussion delves into the multifaceted nature of water, its patterns, and how to integrate it into a landscape, along with strategies for designing multi-functional access that cooperates with water harvesting. Ultimately, understanding these mainframe patterns provides a robust foundation for creating abundant, diverse, and resilient permaculture systems.