一昨日・昨日と続いている「情報共有と電話の回数」（ http://www.hyuki.com/diary/200501#i20050110133233 ）の続き。 http://www.hyuki.com/diary/200501#i20050113223350 → http://www.sampou.org/cgi-bin/haskell.cgi?comment%3aEveryday%3a2005-01-12&l…