<p>Feasibility considerations disregarded, there is a maximal (ordinal) utility frontier representing the Pareto-optimal points-<font color="#ff3300">of which there are an (s-1)fold infinity</font>-with the property that from such a frontier point you can make one person better off only by making some other person worse off.</p><p>红色部分.</p><p class="CM8" style="TEXT-JUSTIFY: inter-ideograph; MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -17.95pt; TEXT-ALIGN: justify;"><span lang="EN-US" style="; mso-bidi-;"><font face="Times New Roman">Samuelson</font></span><span style="; FONT-FAMILY: 宋体; mso-bidi-; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">，</span><span lang="EN-US" style="; mso-bidi-;"><font face="Times New Roman">Paul A. (1954), ‘The Pure Theory of Public Expenditure’, 36 T<i>he Review of Economics and Statistics</i>, 387-389.<p></p></font></span></p>