However, when it goes from an heuristic or a suggestion to a *rule*, it hardens into something really toxic. "Don't waste the user's time with repetitive, minor storage allocations" becomes "never tell the user about any storage allocation; just gobble up their entire disk without asking with a single file called 'UserData.db'"; "don't waste CPU on compression or deduplication" becomes "any time you have a duplicate copy, just save an unlabeled copy, who cares"