By training and profession, I am an engineer; my years of engineering experience have taught me that “good intentions” do not determine results. Success in engineering is objective: your bridge will stand, your machine will function, and your computer program will run correctly, only if designed and built in strict adherence to physical laws and principles; emotions generally have little to do with engineering outcomes. Since the discipline of engineering, meeting goals through actions based on proven principles, is lacking in our daily lives, it is no surprise that it is missing from our public policy.
Having said all that, I am reminded of a personal ad posted in our school newspaper by a coed who described herself as "dynamic and attractive" and who wanted to meet a "passionate, active young man." The final words in the ad were, "no engineers." We are all well served by humility and a sense of humor.