When you know the date of an event, you can locate others events that are not in a direct relationship with it. You can then situate the evolution of distant lines of events without needing to memorize too many dependency graphs.
No you cant. Because at that point, you know nothing about the other events you are supposed to locate and have no reason to care.
> You can then situate the evolution of distant lines of events without needing to memorize too many dependency graphs.
I am not even sure what that is supposed to mean in the context of high school history. You drew events you know about into lines or graph and still know nothing about how they relate to each other.
Understanding that A happened, which led to B happening later on is what matters. Having a ballpark is good for most things. Or do you still remember the exact dates you memorized on your history classes?