... many-universe formulations in the wake of the initial successes of the in a-tion hypothesis. Andrei Linde formulated a modified version of the in ation idea,dubbing it “chaotic in ation” (1990a, ... moment of origination in the single in ation event.Pushing this speculation a step further, Linde, Vilenkin, and others postulate a“multiverse” that is in nite both in space and in time, one in ... chapters in this volume will take up this question.Fine-tuning in biology?What are the prospects for discovering instances of fine-tuning in realms other thanphysics and chemistry – in biology,...