COMMENT ⊗ VALID 00002 PAGES C REC PAGE DESCRIPTION C00001 00001 C00002 00002 .REQUIRE "LET.PUB" SOURCE FILE C00003 ENDMK C⊗; .REQUIRE "LET.PUB" SOURCE FILE ∂AIL Robert Cartwright↓Department of Computer Science↓Cornell University ↓Upson Hall↓Ithaca, N.Y. 14853∞ Dear Corky: Look at the paper by Mitchell Wand in the Jan. 78 CACM for another claim of the inadequacy of first order logic. .sgn