Wikipedia, it's the idea that "a small change in several of the approximately 26 dimensionless fundamental physical constants would make the universe radically different: if, for example, the strong nuclear force were 2% stronger than it is (i.e. if the coupling constant representing its strength were 2% larger), diprotons would be stable and hydrogen would fuse into them instead of deuterium and helium. This would drastically alter the physics of stars, and presumably prevent the universe from developing life as it is currently observed on the earth."
I've been trying to poke a hole in it with a sufficiently broad systematic definition of life, but my knowledge of biophysics and exobiology are insufficent. |