Experience vs. expertise: why 30 years of repetition doesn’t always equal 30 years of feedback. Using new pool plaster and acid wash practices as an example, this episode looks at why experienced pros can keep using the same methods for decades, even when better information becomes available.
“I’ve been doing it this way for 30 years.”
It sounds like strong evidence. But what does 30 years of repetition actually prove if the feedback never came back?
In this episode of The Pool Envy® Podcast, we explore the difference between experience, repetition, and meaningful long-term feedback, using new swimming-pool plaster and controlled acid exposure (often called an acid wash) as the example.
The psychology behind it is surprisingly powerful:
- Habit can turn a procedure into an automatic response rather than a fresh decision.
- Status quo bias can make the familiar method feel safer simply because it is familiar.
- The Einstellung effect can cause an old, successful solution to make better alternatives harder to recognize.
- Research into expert judgment shows why experience becomes more valuable when it includes clear, meaningful feedback.
- Normalization of deviance helps explain how “nothing bad happened last time” can gradually become evidence that a practice must be acceptable.
- Cognitive dissonance helps explain why changing a long-held professional belief can feel much more personal than simply changing a procedure.
Thirty years of work may represent an enormous amount of experience.
But did those 30 years include seeing the work again at year one, three, five, or ten?
Who would have told you if something went wrong?
And what outcome would actually change your mind?
Years of repetition build habit. Only years of feedback build expertise.
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RESEARCH DISCUSSED
Wood, W., & Neal, D. T. (2007). A New Look at Habits and the Habit-Goal Interface. Psychological Review, 114(4), 843–863.
Samuelson, W., & Zeckhauser, R. (1988). Status Quo Bias in Decision Making. Journal of Risk and Uncertainty, 1(1), 7–59.
Luchins, A. S. (1942). Mechanization in Problem Solving: The Effect of Einstellung. Psychological Monographs, 54(6).
Kahneman, D., & Klein, G. (2009). Conditions for Intuitive Expertise: A Failure to Disagree. American Psychologist, 64(6), 515–524.
Vaughan, D. (1996). The Challenger Launch Decision. University of Chicago Press.
Festinger, L. (1957). A Theory of Cognitive Dissonance. Stanford University Press.
The psychology discussed in this episode describes general patterns of human behavior and is not intended as a conclusion about any particular contractor, installer, manufacturer, or individual.
This podcast is provided for educational and informational purposes only. It is not legal advice, engineering advice, or a substitute for product-specific manufacturer instructions, applicable codes, standards, or professional evaluation.
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