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parallel a={} ::: 1 2 3parallel {1}={2} ::: a b c :::+ 1 2 3(I'm brand new to this, sorry if the syntax isn't right) to do something more useful. Other decisions, like allowing ungrouped output without line buffering, make me think that the philosophy is to give you control, and it's up to you to prevent races, correct them after the fact, or somehow make use of the result. Just my first impression.