> I have asked them to write down what they are worried about and what disaster they see in 10-20 years. Isn't this a bit of selection bias? Not all of my frie

> I have asked them to write down what they are worried about and what disaster they see in 10-20 years. Isn't this a bit of selection bias? Not all of my friends from 20 years ago are still here, and even fewer of them (maybe myself included) won't be here 20 years from now. Maybe their worst fears did come true. The world didn't end for all of us, but it definitely ended for some of us. Sure, everything seems fine, right up until it isn't.