Testing is learning through questioning and acting upon questions and answers. The importance of our questions and their answers determines testing value. There is a truth hidden behind this perspective: Feedback is at the core of testing. Testing is valuable to the extent that it generates feedback. It is valuable to the extent that it improves understanding and supports better decision-making. This feedback operates on two interconnected levels: individual and collective.
At an individual level, feedback emerges from inspection and interaction with the system. Every test we design and execute produces feedback — about behavior, risks, inconsistencies, and unexpected outcomes. This is where learning begins. We interpret the feedback, form hypotheses, challenge assumptions, and gradually develop a clearer understanding of the system. We learn through this loop of observation and reflection.
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