The other side of the coin for his implicit argument that you should think about these tail end risks is that they're everywhere and in everything we all do commonly, even in fundamentally non-irresponsible activities. Ie: driving your car daily for errands around town will 99.9% of the time result in errands completed more quickly. 1 out of 1000 times, it could result in you killing yourself or someone else, even if you're always perfectly sober when you drive. Thus, while long tails risks shouldn't be forgotten, giving them too much weight as a basis for decision making could easily paralyze one into forfeiting all kinds of activity or choices. It would become a very constricting way to live a life, very quickly. Magnify this possibility accordingly for people who naturally suffer anxiety issues about life.