I like the way this thread starts off with "grandpa knew best" while there's another
thread in the Nutrition section that has "parents don't know anything". These may seem like contradictions, but in a larger sense they come from the same drive we have to survive.
What they tell me is that this generation, like every single one what came before it going back to the earliest days of humans, is looking for ways to organize the way they think about the world, to make sense of what's around them, and to find systems of pattern recognition that cut through life's "noise" and allow for real, immediate progress on the day-to-day scale.
Pattern recognition, and the use of such to predict the probable future, is the key to our success as a species.
Whatever system of rules or guidelines you end up using, it is comforting to know that there is no "absolute set" and that we can (and must) adapt our system as we change, and as the world changes around us. The special pleasure of being a human at the top of the food chain is realizing that our decisions alter the world around us, and end up altering us in return. It's what got us where we are, made us who we are, and is affecting who we will become, one decision at a time.
So bring on more additions to the list. The more ground it covers, the more ambiguities and contradictions it contains, the more it becomes a record of how we have survived.