Leave code in better shape than you found (Good)

Context ^

• code base under development
• coding standard

Problem ^

• defects accumulate, esp. during changes

Solution ^

• when changing code, aim to make some improvements, so it is "better" than you found it

Consequences ^

• + gradual improvements in code quality
• + learning opportunity
• - pointless changes
• - might not be better
• - too much change
• - cost in time
• - potential new bugs