I guess it takes a little experience to know when a batch is truly beyond hope. Aging does alot- smooths out rough flavors, "hot" taste, etc. But if it's infected and truly bad (like vinegar, or fecal smelling) no amount of time in the world will save it. The trick is knowing when it is young, and when it is beyond hope!
Broken Leg Brewery
Giving beer a leg to stand on since 2006