The phrase "in a communal setting" is perfectly correct and usable in written English. You can use it when you want to describe a situation where people are living, working, or interacting with each other in a way that encourages cooperation and collective responsibility. For example, "The members of the co-op all worked together in a communal setting to get the harvest in before the rains came.".
We would not know evil necessarily if we were the only one alive in the world -- we would not need the definition, hence evil emerges in a communal setting [in this sense, the global human community].
"I found the energy and the focus I needed in a communal setting.
You should definitely watch the World Cup in a communal setting.
The latest move is One Table nights, which bring guests together to enjoy a one-off menu in a communal setting (£40 a head, including wine).
A few looked too much like loners to be comfortable in such a communal setting, while several appeared to be severely fame-obsessed.
This is also important, as we will see later, because Bradley believes morality is relative to a communal setting, and sees a child's moral development as dependent on membership in a community.
Thus, it seems that people do not have to 'stay put' to feel they have retained their independence and sense of living in their own home but by moving into housing with care they can benefit from the care, support and social aspects associated with living in a more communal setting.
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Ha Thuy Vy
MA of Applied Linguistic, Maquarie University, Australia