There is this and there is that and you say they make the other.
Not at all; they make something else entirely different.

You take your two and your two and make your four and try your four on the world, and it works--yes, it works up to a point; but there is something left over, something unexplained; you don't know what.

I do.

It's the other two.

Therefore I say to you, Mr.Robert Hendricks, that two and two make six, because God loves the Irish, and for no other reason on earth." So much for the dreams of Molly, the memories of Bob, and the vagaries of Mr.Dolan.They were as light as air.