The world is complex. Climate change, pollution, water shortage, demographic fluctuation, power grabbing, economical crisis, etc. So many things can happen and

The world is complex. Climate change, pollution, water shortage, demographic fluctuation, power grabbing, economical crisis, etc. So many things can happen and change the rules of the game entirely. Not to mention all what we don't know. The book anti-fragile have a very good bit on that. The point is everything moves, nothing stays the same, good and bad runs go hand in hand. But imagine if a dictator of the last century had access to Facebook social graph... You gotta be careful when it's good, to not have it too bad when it's getting bad later