John E. Karlin, Who Led the Way to All-Digit Dialing, Dies at 94
▻http://www.nytimes.com/2013/02/09/business/john-e-karlin-who-led-the-way-to-all-digit-dialing-dies-at-94.html
A generation ago, when the poetry of PEnnsylvania and BUtterfield was about to give way to telephone numbers in unpoetic strings, a critical question arose: Would people be able to remember all seven digits long enough to dial them?
John E. Karlin, a researcher at Bell Labs, studied ways to make the telephone easier to use.
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