[NovemberWhiskey]

>Not true, even pre-internet the world had functional real-time public communication. We called them telephones.

Telephone calls are private; not public. There are two parties. It's literally against the law for other parties to attempt to become privy to those communications under most circumstances (wiretapping).

Please explain how something like HN works on the telephone.

>Not true, user generated content exists in print and it should be cheaper on the internet than in print.

User generated content does indeed exist in print, where the cost of printing and shipping that content are incumbent on the party that wishes to make their opinion known. When unsolicited or tiresome, we refer to this as junk mail or chain-letters.