Watanabe's episode about Indexcard
One of Watanabe Shoichi's book "知的生活の方法 (Chiteki Seikatsu no Houhou, A Way to Intellectual Life, 1976)" is filled with tons of his 'lifehacks'.

He introduced an episode with card system (indexcard + card box) during his stay in Germany as student. A German professor suggested to use card system. Following the hint, he immediately got card box, and start to use it for his research. After a year, he write 300 pages of doctor thesis and got doctor degree successfully.

Revised : 2006.11.26
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