In the first year of undergrad, most of us knew what psychology was, and knew what we were studying. If we didn’t, why would we have signed up to study it? Then the further we got through uni, the less sure we were about what psychology actually was, and what we were studying.
Now, the exact same thing is happening with sci-comm. Does this even work for other subjects? (Possibly philosophy I suppose?). Do geographers or chemists start uni and then discover they have no idea what geography or chemistry is?