ESL: 20 Years Old, 10 To Go

It is a common perception that the rate of technology adoption accelerates. In 1873, the telephone was invented and, after 46 years, it had been adopted by one-quarter of the U.S. population. Television, invented in 1926 took 26 years. The PC in 1975 took just 16 years. It took only 7 years after the introduction of the Internet in 1991 before it was seeing significant levels of adoption. So... » read more