How Random is Sims 4 Really?

I think the idea that I was originally explaining is getting lost. I know that some random events within our own sims families. But I was thinking more like stuff happening outside of our households. Such as seeing too people getting into a fight on the street, remember Sims 3 when you would be at a park and suddenly some woman would go in labor?

So randomization throughout the whole game. Things that may not really affect your sims personally but would be entertaining to see your sims respond to. On Neighborhood Brawl Day even, there are no brawls that break out except the ones you instigate.