The phrase "discuss the theory" is correct and usable in written English.
You can use it when referring to a conversation or examination of a particular theory in an academic or analytical context.
Example: "In this paper, we will discuss the theory of relativity and its implications for modern physics."
Alternatives: "examine the theory" or "analyze the theory."
Of course they talk about their babies – you wouldn't expect them to discuss the theory behind Schrödinger's cat on two hours' sleep – but they can also process what they are going through.
The most famous of these was the Accademia of Leonardo da Vinci (established in Milan c. 1490), which seems to have been simply a social gathering of amateurs meeting to discuss the theory and practice of art.
Then, we discuss the theory and modeling of quantum transport in RRAM.
(The appendices discuss the theory of quantification, mathematical induction and the axiom of reducibility, and the principle of extensionality respectively).
We discuss the theory of the interventions and the logistics of how they were linked to create consistency and synergy.
In order to discuss the theory in the light of what precedes, we shall nevertheless assume that situations are objects, designated by sentences.
(The reason for its rarity in animals isn't understood, but we discuss the theories in the book I wrote with Allen Orr, Speciation".
Leading up to our research questions, and as explanation for our research design, we will first discuss the theories of: dimensions of context, semantic knowledge networks and cognitive load.
Men such as Raphael Meldola ("Darwin's entomological bulldog") openly discussed the theory of natural selection at a time when other professions remained more circumspect.
Your editorial about the recent decisions in Kansas and Dover, Pa., is accurate in discussing the theory of evolution, which indeed is a theory that is substantiated as such by science.
When Pennsylvania's state beekeeper, discussing the theory that cellphones have interfered with bees' directional signals, says, "That really took wings," he seems to be indulging in bee humor.
