That reminds me of a story about Indian Railways and their timetables. A railway employee was handling a customer complaint, which was the trains were often late, in fact, very late, sometimes hours, or even days. What use was the timetable if you could not rely upon it? The employee replied sagaciously, that the timetable was, in fact, extremely useful and very reliable, as it listed the times before which it was guaranteed that the train would not depart.A man was complaining to a railroad engineer.
What's the use of having a train schedule if the trains are always late.
The railroad engineer replied.
How would we know they were late, if we didn't have a schedule?