He does naught but bury himself in his books without any contact with the outside world. I'm afraid his theses will be so wishful so as to lack any connection to actual society.
佢淨係掛住埋頭苦讀，唔同外界接觸，寫出嚟嘅論文恐怕都係「閉門造車」，同現實社會脱節。