Intelligent people usually have a logical view on any problem they face.
If someone's father has just died, in most cases, intelligent people deal with event logically, let's say for example he was sick before, he was diagnosed with a terminal disease, intellegent people in most cases has predicted his death before, thus, it wouldn't surprise them when it happens, and they think that their peer has the same feelings as well.
This is not scientifically proven, it's just an explanation I got from a friend of mine.**