Unlike other public telecommunications networks, it is not managed by a single corporation, government agency, or other entity. Rather, it is a cooperative interconnection of many such single-entity networks. The Internet began in 1969 by a team of scientists doing research on computer networking. These packets could move independently of each other, even on different paths and still arrive at the destination in a useable form. Protocols are a set of rules for communicating.
Humans have many protocols for communicating.
I acknowledged him and waited for him to acknowledge me. We both didn't talk at the same time. If we did then neither one of use would have gotten the communication very clearly and there would have been a communication error. Notice we were both speaking English. If we weren't then we wouldn't have understood each other and there likewise would have been a communication error.