Fine-Tuning, Multiple Universes, and the "This Universe" Objection

Abstract: When it is suggested that the fine-tuning of the universe for life provides evidence for a cosmic designer, the multiple-universe hypothesis is often presented as an alternative. Some philosophers object that the multiple-universe hypothesis fails to explain why this universe is fine-tuned for life. We suggest the "This Universe" objection is no better than the "This Planet" objection. We also fault proponents of the "This Universe" objection for presupposing that we could not have existed in any other universe and that the values of the free parameters of the Universe could have been different. Lastly, we reflect on why fine-tuning for life needs explaining