ERROR PREVENTION
- Inadequate initial state validation
- Inadequate tests of user input
- Inadequate protection against corrupted data
- Inadequate tests of passed parameters
- Inadequate protection against operating system bugs
- Inadequate version control
- Inadequate protection against malicious use
ERROR DETECTION
- Ignores overflow
- Ignores impossible values
- Ignores implausible values
- Ignores error flag
- Ignores hardware fault or error conditions
- Data comparisons
ERROR RECOVERY
- Automatic error correction
- Failure to report an error
- Failure to set an error flag
- Where does the program go back to?
- Aborting errors
- Recovery from hardware problems
- No escape from missing disk
