A theory, as I teach in my class, has to fit all the facts.

But it's a guess that fits all the known facts.

That would still fit the facts as we know them.

The problem with his theory was that it didn't fit the facts.

But that did not quite fit the facts of the case.

Okay, yes, it did seem to fit the facts as we now knew them.

I could be wrong, but it seems to fit the facts.

Once again I could not get the theory to fit the facts.

That was real enough; but still it didn't fit the facts.

Now we know that story line doesn't fit the facts.