Everything in life has certain risks. Even after making educated decisions, one could take an excursion and suffer a disaster. I'm a fatalist. I choose what I wish to do and hope for a fantastic experience. I don't dwell on the what if's.
The people who perished or were injured went on their excursions with those very same expectations, never once expecting tragedy. No one equates vacation with tragedy. Sadly, these things do happen. This week, far too much.