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these changes incorporated the disequilibrium behavior of the models can be shown to be much more optimistic than the classical result of section I. The strength of the consumption displacing and productivity augmenting effects is an empirical question but the theoretical insight is sufficient to probe this dimension further.
     The analysis needs to be extended in two important ways: (a) other methods of financing public goods, such as public debt, need to be examined. The results are likely to be similar but for the conceptual differences in tax burden and debt burden, (b) Once we acknowledge specific forms of welfare functions, the burdens of public goods provision need to be studied in a much more general way. Alternative definitions of tax burden, especially in welfare terms, are necessary. We are reporting such results elsewhere.
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