The First Designs of the Valar Are Never After Restored Again

The first designs of the valar were never after restored again. They didn't know that perfection would be a sustainable witin arda. So they're limited in their knowledge. No wall they would have known about melcor's return ats a very pint hooker would never av been able to steak by an omniscient man wife. That is and andi, so ye imean, it's because the vaa are not omnipotent any any more than elves or men are.