But I can make a guess about how his mind works.
So you look at how often you're able to make a guess.
My father might take 10 minutes to make a guess.
No one will ever know, though everyone can make a guess.
You could usually make a good guess as to the time.
And we can make a pretty good guess as to why.
Reading between the lines he could make a pretty good guess at what had happened.
He didn't even have time to make a good guess!
Might you be able to make a guess like that about us?
So I make a guess that perhaps you were involved.