Because the Japanese have conducted extensive research into Taiwan, almost every scholar of modern Taiwanese history needs to study Japanese, to be able to read Japanese documents. Nevertheless, Wu often encounters situations that leave him not knowing whether to laugh or cry.
而由於日人研究台灣的資料豐富，近代的台史學家幾乎都會進修日文，以便閱讀日文文獻，不過，吳密察卻也經常碰到讓他啼笑皆非的狀況。