The first smartphone was invented in $1992.$ The first Apple home computer was invented in $1976.$ Why then, did most Americans only log onto the Internet in the early $2000$s$?$ What took them so long to do so$?$ If you look at the line graph in Lecture # $9,$ page $4$ you see the use of the Internet increased dramatically from between $2003$ and $2007.$ Why?