the same basis that you would have that life can evolve in that amount of time. we are both speculating.
-quoted from michael behe, science writer
There are four important forces in nature, that affect the way matter holds together, the way atoms bond to each other, and the way planets, stars, and galaxies form. These are the strong nuclear force, the weak nuclear force, the electromagnetic force, and gravity. Physicists (who are not like the rest of us) have asked questions such as, “what would happen if the values of these constants were altered? Well, it turns out that very bad things happen if you raise or lower the values of these forces by more than a few percent. Things like a universe in which there is only hydrogen, or one in which there is no hydrogen (both bad). Also, the ratio of these forces to each other have to be finely balanced. For instance, the ratio of the electromagnetic force to gravity is critical to one part in 10^40 !! Hugh Ross, an astrophysicist who’s a lot smarter than me, has come up with a list of 35 physical constants that must all have values within narrow ranges for even the possibility of life to exist. As one astrophysicist, Paul Davies, has said, “the laws of [physics] …seem themselves to be the product of exceedingly ingenious design…[there] is for me powerful evidence that there is something going on behind it all…It seems as though somebody has fine-tuned nature’s numbers to make the Universe…The impression of design is overwhelming. “ (quoted by Ross in Creator and the Cosmos, p. 157).
the explosion (Big Bang) produced an outward expansion that was amazingly balanced to the mass of the universe; if the initial rate of expansion had varied by more than one part in 10^50, the universe would have either collapsed with a thud, or expanded too rapidly to allow the formation of galaxies and stars. In addition, a finite age to the universe means that chance processes do not have an infinite amount of time to work. And, knowing the complexity that has to be produced, the universe is far too young to have produced life by chance alone.