Title: The Zig-Zag Course of Concrete Progress
Author(s): Herbert J. Gilkey
Publication: Journal Proceedings
Appears on pages(s): 573-580
Keywords: no keywords
Retireing President Gilkey emphasises that concrete has not become more complex, but rather that as knowledge advances, usually in a zig-zag course, not a straight line, more problems and seemingly contradictory half-truths become evident.