Evidence Emerges That Laws of Physics Are Not Fine-Tuned For Life - Technology Review: "So what value of the cosmological constant best encourages galaxy and star formation, and therefore the evolution of life? Page says that a slightly negative value of the constant would maximise this process. And since life is some small fraction of the amount of matter in galaxies, then this is the value that an omnipotent being would choose.
In fact, he says that any positive value of the constant would tend to decrease the fraction of matter that forms into galaxies, reducing the amount available for life.
Therefore the measured value of the cosmological constant, which is positive, is evidence against the idea that the constants have been fine-tuned for life."