It doesn't have any logic, it's just prediction based on statistics. There is so many examples already floating around that it has no logic but I will give you really simple one from my experiments:

I told it to:

> curl somedomain.ext

It replied with curl error that this hostname doesn't exists.

Then I told it to:

> curl https://somedomain.ext

And it replied with some random http response showing that this hostname exists.

There is no logic here.