Rolando Hernandez, a highly experienced business rules consultant,  shares his “True Tales from the Trenches“.  Here is a monologue of the decision table from his first tale “A Rule is Born“: “If only someone had tested all the possible combinations of conditions. Dev or The Business would have detected my rule logic errors earlier in my life cycle, before I graduated to Production. And then I would have known exactly what to decide when real-life data was input to my decision service. If only… then I would have made the right sub-decisions and decisions and reached the right final conclusions every time, from day one.” Link