1. Have a default handler for every expected (exceptional,
common or not) error.
2. Handle specific errors as appropriate based on where and
when they occur.
3. Have a default catch-all handler for unknown errors.
4. Override any default handler if needed.
5. Keep our code DRY.
Slide 5
Slide 5 text
Global VS Specific
Global
Handle an error in a common way
Specific
Handle an error specifically for a screen