A.1.RI:4.5 - Resolve only the distinction the next use needs

Try the receiving calculation or decision on the surviving alternatives. If each gives the needed result, continue with that result and leave the unused identity question open. Section :5.1 obtains the same mean position under both surviving associations.

If the difference changes the next action, determine which available fact, observation or subject constraint would distinguish the alternatives. Prefer an already available discriminator. Obtain more information when its likely contribution warrants its cost and delay; C.11.DUA supplies that choice.

Some work permits a provisional action with the unresolved risk. State what that action assumes and what observation would call for correction. Work that requires the identity to be settled must return to the missing identifying contribution. An unresolved identification need not stop other work whose result is unaffected.