Sentence examples for upgrading a theory from inspiring English sources

Stress that theories are larger than laws, and that "upgrading" a theory to a law would actually be a downgrade.

Upgrading A Mac's System Q.

(Upgrading a pass is costly).

Sonu had a theory.

Why? Pick a theory.

Seymour-Jones has a theory.

"Such a theory was inevitable.

Well, I have a theory.

It is only a theory.

I, too, have a theory.

Testing a theory, revising it.