The Science and Magic of Debugging
summary
Debugging maps to higher cognitive work: the talk claims bugs are found by iterating a hypothesis cycle that mirrors the scientific method and climbs Bloom's taxonomy, citing a 1991 debugging model and a 2004 cognitive study and noting developers spend about 50 percent of their time fixing bugs. Concrete tactics include simplifying failing conditions, narrowing suspicious regions, and verifying hypotheses with pry and byebug, logging, puts, profilers and tracers, with each failed test becoming a learned fact.
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chapters (12)
- 0:00Start
- 7:38The Debugging Mindset
- 8:15Mental Model
- 10:53Bloom's Taxonomy
- 12:58Evaluate and Synthesize
- 17:09A General Framework for Debugging
- 18:15How Is this Debugging Process Model Applied
- 19:17The Hypothesis Selection Phase
- 21:08Hypothesis Verification Phase
- 23:45Debugging Process Model
- 24:07Scientific Method
- 30:05Debugging Is Not Magic
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