Some days are bad days. Of course, we prefer our days to be good or even great, but such is life.

In my chemistry career, every brand-new chemist would have a bad day about three months after starting in the laboratory. I would hear a glass flask or beaker fall and shatter. It's not a nig deal and is a part of working in a lab. But then, about an hour later, I would hear another glass flask or beaker shatter... And then a third sound of shattered glass.