The unpredictable. (Did you picture something negative?)
How many things happen in our day we didn’t predict? Quite a few.
We usually give negative unpredictable badges to the poignant and worst things. You’ll start to notice that everyone has a different threshold of the things they deem worthy of this badge. That’s why some people have a higher “tolerance” of negative unpredictable experiences and others are tipped off by little things.