noun
knowledge gained from newspapers; information acquired from newspapers
Refers to the kind of practical, current-events knowledge one picks up by reading newspapers, often with a nuance of being broad but perhaps shallow.
彼の知識は新聞学問に過ぎない。
His knowledge is nothing more than what he's picked up from newspapers.
新聞学問だけでは深い
You can't gain deep understanding from newspaper knowledge alone.