Programming Education Context

• Professor teaches intro to programming and computer science classes each semester
• Specific class dedicated to debugging process
• Debugging defined as: fixing code that doesn't run as expected

Programming vs Natural Language Differences

• English sentences have multiple interpretations
  • Example: "The chicken is ready to eat"
    • Vegetarian interpretation: chicken wants to eat food
    • Meat-eater interpretation: chicken is ready to be eaten
• Programming code has only one interpretation
  • Computer follows algorithms/instructions exactly one way
  • Programmer error when expectations don't match results

Rubber Duck Debugging Technique

• Solution involves taking time away from problem
• Explain code line-by-line to someone with zero programming knowledge
• Rubber duck serves as inanimate debugging partner
• Forces scrutinization of every code line, including "correct" ones
• Most errors found in code assumed to be correct
• Analogy: looking for glasses while wearing them on head

Alternative Debugging Partners

• Rubber ducks (various designs available)
• Frogs and pigs as alternatives
• Friends can work but may be judgmental
• Professor used 1-year-old son as debugging partner
• Key requirement: partner must know nothing about programming

Debugging Process Requirements

• Must explain in great detail
• Cannot skip any steps/details
• 90% of problems are user error
• Applies to life outside academia - self-reflection needed

Duck Selection Activity

• Professor brings box of various rubber ducks
• Participant selects mohawk duck (described as offbeat, eye-catching)
• Crew member also selects mohawk duck
• Ducks given as gifts