Guidelines -- Check obvious

2. Check for the “obvious” problems



• Verify that the inputs are as required
  • Are there 0-O 1-l I-l or other substitution mistakes
• If there are multiple components or files in the buggy system, establish that these are properly “connected”
• Has anything been changed recently
• When there are multiple inputs, does the order matter

The chances are small that the problem is something “obvious” because if it were so “obvious” you would have already found the problem … but you must check

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