Now that I work on a company that values documentation, I understand the enormous value that provide. From keeping a journal, to write a spec that will avoid the necessity to explain over and over again the same information to different people. As a developers we tend to look a this tasks as tedious and see no value on them until we face or witness some of its advantages.
Fortunately, I have witnessed those advantages! :)
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We strive for transparency and don't collect excess data.