> On the Internet, the city has billions of people. Quality of conversation is very different. Here I am, talking to you randomly. But I can't keep pinging you

> On the Internet, the city has billions of people. Quality of conversation is very different. Here I am, talking to you randomly. But I can't keep pinging you to discuss math. > Rural towns are devoid of most things. Every urban area has math PhDs. Most of whom have "moved" on and do not want to do math in their free time.