Most existing records are kept by document types in a chronological order. There is nothing wrong with this, it is just not complete. Impacting events on a construction project entail all types of documents. To properly tell the story your chronology must contain all the salient documents. Not only that, but if done contemporaneously, you can recognize the gaps in the storyline and fill them in while they are known and clear.
Just saving documents is just not near enough, by a long shot. Non-organized or poorly organized documentation cannot possible tell a story or support assertions, in fact they bury storylines. Sure, you can attempt the organization process later when you need to recover history, but this reduces both accuracy and completeness. Individual documents are lost, misplaced or simply not located due to inadequate identification. When proper filing and review of file contents is done contemporaneously, missing timeline information can be gathered or created to fill all gaps. Long after the events this is not possible, certainly not with accuracy. Logs are great, but inadequate by themselves. Learn to be great historians. Read the articles below: