It would justify (if true) becoming drunk/sleep deprived when you want to try and solve what the article calls 'creative insight' problems, that is, problems that are usually solved in a flash of insight and not through deliberate, methodical process.

One study (the one I linked to above) tested people at their 'least optimal time of day' (night owls in the morning) and found them to be more effective at solving these types of problems, and the other (which I neglected to link to before) is about inebriated students (BAC ~0.075) attempting to solve 'remote association tests' with word problems and found that, 'Intoxicated individuals solved more RAT items, in less time, and were more likely to perceive their solutions as the result of a sudden insight.'