Let's suppose you are shopping for cars and you make notes (daily recording of events) for 5 cars a day for 3 days. Tuesday, Wednesday, Thursday. In the GTD system, where would you record that information?
For those who missed it, the old Franklin methodology is to put the day's collection of information on the right-hand side of a 2-page-per-day planner. The system made extensive use of pointers (references) back to information to avoid rewriting. When I was trying to make it work, many moons ago, I found it to be very fragile. While having a date attached to information is sometimes useful, it is typically not very useful to have all the information attached to a given date all together. It is usually better to have all the information attached to given project collected together. There are a lot of ways to accomplish this, with folders (paper and software) the obvious tools. Of course, GTD is pretty tool-agnostic.