In all fairness, I've heard the use of "real time" applications with respect to chat (websockets) or video (WrbRTC). This is the first time I've been introduced

In all fairness, I've heard the use of "real time" applications with respect to chat (websockets) or video (WrbRTC). This is the first time I've been introduced to this definition of real-time computing. I'd be interested to see how many people are aware of this definition and why there appears to be such a divide in the first place.