著者: Winn L. Rosch
Other hypotheses about the QWERTY placement also lead to dead-ends.For example,breaking a strict alphabetic order to separate the keys and prevent the type bars (the levers that swing up to strike letters on paper) from jamming doesn't make sense,because the arrangement of the type bars has no direct relationship to the arrangement of keys.
http://books.google.com/books?id=S90OaKQ-IzMC&lpg=PA639&dq=The%20Winn%20L.%20Rosch%20Hardware%20Bible%20QWERTY&as_brr=3&hl=ja&pg=PA733&output=embed
