Under Quotes - page 90
Microeconomics, including the study of individual choice and of group choice in market and nonmarket processes, has generally been considered a field science as distinct from an experimental science. Hence microeconomics has sometimes been classified as "non-experimental" and closer methodologically to meteorology and astronomy than to physics and experimental psychology (Marschak, 1950, p. 3; Samuelson, 1973, p. 7). But the question of using experimental or nonexperimental techniques is largely a matter of cost, and generally the cost of conducting the most ambitious and informative experiments in astronomy, meteorology, and economics varies from prohibitive down to considerable. The cost of experimenting with different solar system planetary arrangements, different atmospheric conditions, and different national unemployment rates, each under suitable controls, must be regarded as prohibitive.
Vernon L. Smith
Colours no longer looked as brilliant to me as they use to do [Monet's sight was beginning to fail], I no longer painted shades of light so correctly. Reds looked muddy to me, pinks insipid, and the intermediate or lower notes in the colour scale escaped me. As for forms, I could see them as clear as ever, and render them as decisively. At first I tried pertinacity. How many times I have remained for hours near the little bridge, exactly were we are now, in the full glare of the sun, sitting on my camp-stool, under my sunshade, forcing myself to resume my interrupted task and to recapture the freshness my palette had lost! A waste of effort. What I painted was more and more mellow.... and (when) I compared it with what I used to do in the old days. I would fall into a frantic rage, and I slashed all my pictures with my penknife.
Claude Monet