In his later writings, Coase expressed frustration that his theorem was often misunderstood. Although some have used Coase's analysis to argue that because transaction costs are never zero it is always appropriate for a government to intervene and regulate, Coase believed that economists and politicians "tended to over-estimate the advantages which come from governmental regulation."[1] Some mistakenly understood the theorem to mean that markets would always achieve efficient results when transaction costs were low, when in reality his point was almost the exact opposite: because transaction costs are never zero, it cannot be assumed that any institutional arrangement will necessarily be efficient. Therefore, Coase argued that it is important to always compare alternative institutional arrangements to see which would come closest to "the unattainable ideal of the (mythical) world of zero transaction costs."[2]