Depends heavily on context. I spent my whole trading career not more then 4 feet from the person to my left, right and front and not more than 7 feet from the g

Depends heavily on context. I spent my whole trading career not more then 4 feet from the person to my left, right and front and not more than 7 feet from the guy behind me and it was awesome because we were a highly real time commodities trading team amd needed to hear everything everyone was saying. It has been less good doing it stuff in the later part of my career, as real time communication is nearly irrelevant.