Plumbob is part of anatomy of a sim?
This is the question, and also my theory Plumbob is really part of a sim, instead be only a visual effect to say us this is the active sim Get to Work and other expansions let me say it With Gt...
Forum Discussion
They might be some sort of aura which we, as the Watchers, are especially perceptive to, but most Sims don't consciously notice - after all, they change colours to reflect the mood of the Sim...
