Science is merely observation. One persons observation can greatly vary from the next. A majority of scientists believe in evolution. A majority once believed in other theories like the bodily humors, eugenics, and various forms of medicine which turned out to be horrifically bad for you, and yet science goes on. Our understanding changes all the time, and for someone to simply mock another system for seeing something the way you do not is... well, small minded and quite intolerant, reasons I imagine you would use against religious beliefs in general. One person believes the Earth is 6 billion years old. Another believes God created the Earth in a "mature" state, with starlight hitting it, dead matter in soil, etc. Neither has been observed, so therefore the best you can have on either is "faith".