".....evaluation results were seldom compelling to the interests and ideologies of stakeholders, stakeholders usually regarded scientific input as minor in decision making, and problem solving is far from a rational endeavor." - Shadish, Cook, & Leviton, 1991

"Evaluation is what separates astronomy from astrology, good explanations from bad ones, good experimental designs - or bridge designs - from inferior ones, good scientists, engineers and technologists from run-of-the-mill ones." - Scriven, 1993