If I am the only person playing for dancing - does not happen often but is does sometimes - stopping is much more destructive than playing wrong notes. Playing for dancing forces you to just keep playing because it is the rhythm rather than the occasional wrong note. The discipline of the dance forces you to plod on.

I was in a session in a large very crowded, pretty noisy pub in Brighton last night; about a dozen of us around a large table. At times it was difficult to hear yourself never mind what others were playing. Yet, I could often tell when people were playing a wrong note even though I could not hear them. How come? Because musicians screw up their faces/ twitch their mouths. look upwards in disgust etc. when they play a wrong note. I do it myself and i find that much more difficult to control than carrying on playing after a wrong note.