Theists argue that the fine-tuning of the physical constants of the universe provide evidence that the universe is designed.  For example, if gravitational force was 1/100,000,000,000,000th (1/100 trillionth) degree stronger the universe would not have expanded to form the terrestrial bodies.  If the force was 1/100,000,000,000,000th degree weaker the universe would expand at rate too fast for matter to coalesce into terrestrial bodies.  The ratio of electrons to protons is fine-tuned to 1 part in 1037, meaning if the ratio was altered by just 1 part in 10,000,000,000,000,000,000,000,000,000,
000,000,000 complex life would not be possible.

To give you a sense of the specificity involved, Hugh Ross asks us to imagine covering the entire North American continent with dimes, all the way up to the moon (239,000 miles high).  Do the same thing on 1,000,000,000 other continents of identical size, “[p]aint one dime red and mix it into the billion of piles of dimes.  Blindfold a friend and ask him to pick out one dime.  The odds that he will pick the red dime are one in 1037.”[1]