This should be taught religiously in every school from an age where they can understand this concept. It could save; a lot of embarrassment, barking up the wrong tree and fruitless time wasting.
Thank you for this! I am pretty healthy, but I don't always sleep well, so I sleep long. Hearing about this, my young nephew proceeded to tell me that people who sleep more than nine hours a night are more likely to die. I knew there was something wrong with this statement, the implication that sleeping longer hours made people more likely to die. I told him, maybe lots of people who sleep a long time are unhealthy, and that is why they are more likely to die. I didn't really know, in an eloquent way, to tell my nephew that it was illogical to believe that sleeping longer meant people were more likely to die. Now I can discuss the idea more intelligently. This is very similar to the ice-cream/drowning issue. Unhealthy people (C) are more likely to sleep longer (A), and they are statistically more likely to die (B).
