The Great Orb Project minigame follows the premise that, when the Runecrafting altars are used, some of the energy in the transfer to the rune essence is lost and then manifest as yellow or green orbs in the surrounding area. Wizard Vief is of the opinion that yellow orbs are, as opposed to the green orbs, the energy in the rune altars that supply magic. Because of this, he believes that the green orbs are useless byproducts that would ultimately pollute the altars.
Vief didn't receive a face update when nearly all other NPCs (other than Wizard Elriss) and some monsters did.
When asking Vief why he is certain yellow orbs are correct, part of his explanation cites utilising the 'Lefebvre transform' and Lefebvre equations, a play on words of the mathematical Laplace transforms.