Yet, in the light of that major statistical failure - people are still relying here heavily on polls and statistics to try to predict everything. It's like the chocolate milk from brown cows thing. Do you think really Americans are that stupid, or are they just trolling the pollsters because they hate getting polled on everything or receiving calls during dinner?
It wasn't a statistical failure. 538 gave Trump a 30% chance of winning, based on polls. It's not a failure if you predict that something has a 30% chance of happening, and then it happens. The polls never implied that Hillary couldn't lose, merely that it was unlikely. There's no reason not to continue using them for that same purpose.