John E. Karlin, Who Led the Way to All-Digit Dialing, Dies at 94
The New York Time obituary for John E. Karlin, the father of the arrangement of numbers on push button phones and a host of other inventions is deeply moving.
Karlin did not have a series of lucky guesses but researched the capabilities and limitations of people to arrive at product design decisions.
Read the article to learn why one person said Karlin was “…the most hated man in America.”
I first saw this at Human Factors by Ed Lazowska.