My wife is a public librarian, and occasionally comes home with stories of people she had to help with the computer. Patrons are allotted one hour of computer time per day, and she says it often takes that much time just to create a gmail account, compose an email to <government office> and send it. The mouse seems to give a lot of people trouble, which blows my mind--I first encountered a mouse when I was a college sophomore and one of the first Macs appeared on campus. "What's this thing?" I wondered, reaching for it. When I touched it, I noticed the arrow on the screen moving. It didn't take but a second or two to realize that moving the mouse caused the pointer to move in similar fashion. It seemed obvious to click the buttons on the mouse to see what happened, and discover, in about a minute and a half, that a single click selected whatever the pointer was touching, and a double click activated it. How can people not grasp that connection intuitively?

But the sad fact is, there are a lot of people who don't grasp that simple cause and effect relationship, and you know what? Those are the people in your neighborhood... they're the people that you meet, when you're walking down the street. They're the people that you meet each day!