Daily notes vs. dedicated notes
Daily notes are a trap for information you need to retrieve later. They work well for time-bound logs, journaling, and loose tasks, but they fail as a foundation for a knowledge base. You might feel productive during the input phase because dumping thoughts into a daily entry is easy. The cost appears later when you try to find that data.
You won't remember which specific Tuesday you defined a product strategy. Even if you use search to narrow the results, you'll still spend your afternoon scrolling through an arbitrary timeline. Search finds keywords, but it cannot create structure or hierarchy. If you use an index (or MOC — map of contents — as some call it), it is mostly a pointer to the information. You won't replicate it all and create the structure and hierarchy there.
Stitching a narrative together from ten different daily notes is a waste of time. With that fragmentation of insights, you lose the big picture. This creates constant friction because you must reconstruct the context before you can actually think about the project.
Design your system for how you will use it. Whether you prefer folders, tags, or search, your notes must be relevant and findable. Information should live where it makes sense, not just when / where it happened.
Create dedicated notes for projects, people, and concepts. Link your daily entries to these files to maintain a trail, but keep the core knowledge in the dedicated note. You will spend less time hunting for information and more time using it.