Because I don't want to wear my ranty-pants until they fit better. But I am going to take great exception to one word. Can you pick it out from the quote below?
Heal (available at level 16): While priests already have a spell called Heal, the existing version becomes obsolete at higher levels, which is something we intend to change in Cataclysm. Introduced at a low level, the "new" Heal spell will functionally work much like a down-ranked Greater Heal did in the past, adding more granularity to your direct-healing arsenal. If you need to heal someone a moderate amount and efficiency is an issue (making Flash Heal the incorrect spell for the job), then Heal is what you want to use. Heal is intended to be the priest's go-to direct-healing spell unless they need something bigger (Greater Heal) or faster (Flash Heal). We will be following a similar philosophy with all the healing classes.
Now ladies and jellyspoons, which word makes no sense whatsoever? That would be granularity. I give you an explanatory quote (with example) from Wiki:
"Granularity is the extent to which a system is broken down into small parts, either the system itself or its description or observation. It is the "extent to which a larger entity is subdivided". For example, a yard broken into inches has finer granularity than a yard broken into feet". Ok yeah.... whatever. Surely there are better words to describe this?