Although as a professor of electrical engineering he studies information technology, Chang constantly reminds himself that he doesn't want to be overly reliant on computers. He used to disdain using one when writing, wanting to clearly demarcate the boundary between his work and his interests.
雖然是電機系教授、學的是資訊科學，但張系國常提醒自己不要過度依賴電腦，一度他堅決不用電腦寫作，清楚劃分職業和興趣兩個不同世界。