I have a question about the usage of "trace through" here:
The idea that the famous trade-off between flat-tax efficiency and progressive-tax equity may not exist after all will be big news to fairness-minded Democrats! It will take many years to trace through the workings of these winner-take-all markets, to judge their significance in the economy over all.
But I couldn't find a dictionary definition that fit this usage of "trace through". Could it be an error? Would replacing "to trace through the workings of" with "to trace the workings of" be better?