An ounce of prevention is worth a pound of cure.
—Benjamin Franklin, American founding father, inventor, politician, diplomat, scientist, and printer, from a letter to The Pennsylvania Gazette (1735)
The previous chapters have covered many cases where things happen as expected. There are times, however, when failures occur or things don’t go as planned. Situations involving exceptions require planning to handle them well. Examples include accidentally deleted data, lost phones, system outages, or ...
