[devonkim]

The reason for the numbering system possibly comes from the ITIL system where priority is determined as a product of two factors - impact (scope) and urgency. These definitions in most IT orgs I've seen regardless of how poorly executed or immature the org is seems to be pretty consistent and oftentimes include gating factors like other comments in this subtree have been discussing. If some of the most immature and byzantine IT processes can get this nonsense settled, engineers can avoid the bike shedding and goalpost moving, too if they actually put some effort into a sensible system and enforced it.