Very True. The reason is that the Developer is Reasoning through the Code and Playing Computer simultaneously thus forcing him to make sure that both thought s

Very True. The reason is that the Developer is Reasoning through the Code and Playing Computer simultaneously thus forcing him to make sure that both thought streams are "synchronized" at the stage of the debug print() line statements. It is this upfront work which goes into figuring out what the Developer intended vs. what the Computer really does that is so valuable for Code Comprehension.