I feel like I've never heard so much about multi-sigma job beats than I did last year. At what point do we say that something weird is going on? For those who'

I feel like I've never heard so much about multi-sigma job beats than I did last year. At what point do we say that something weird is going on? For those who're wondering what the sigma beat was this time, it was a 4-sigma beat, which is pretty large.