act according to chance, chaos, coincidence

'King of Arda, is it true, as Aulë hath said to me, that the Children when they come shall have dominion over all the things of my labor, to do as they will therewith?' 'It is true' said Manwë. 'But why dost thou ask, for thou hadst no need of the teaching of Aulë?” Then Yavanna was silent and looked into her own thought. And she answered: 'Because my heart is anxious, thinking of the days to come. All my works are dear to me. Is it not enough that Melkor should have marred so many? Shall nothing that I have devised be free from the dominion of others?' 'If thou hadst thy will what wouldst thou reserve? Said Manwë. 'Of all they realm what dost thou hold dearest?' 'All have their worth' said Yavanna ' and each contributes to the worth of others but the kelvar can flee or defend themselves whereas the olvar that grow cannot. And among these I hold trees dear. Long in the growing, swift shall they be in the felling, and unless they pay toll with fruit upon bough little mourned in their passing. So I see in my thought. Would that the trees might speak on behalf of all things that have roots, and punish those that wrong them!'”