Nothing is indestructible, everything can fail somehow. Corelle and Corning Ware don’t fail very often, but when they do fail it can be in a pretty bad way, sort of exploding with lots of very sharp pieces flying. Pyrex seems to sometimes have the decency to just crack in half.
Sometimes it’s easy to point out a human error that caused them to break, but other times it’s really hard to show that anyone did anything wrong. Maybe one was defective from the start, maybe one had new damage that was hard to see… who knows.
