FearGod
Freedom Of Mind
As you walk along and if you happened to see some cow dung lying in front of you (but you haven't seen any cow there), will it take huge reasoning power and intelligence (beyond the capability of a normal human) to judge that it came from a cow???? No. just rational thinking is enough for the job.
Give a jigsaw puzzle to a kid and he will solve it with his own reasoning.
Point mutations in the genes are happening all the time and this is observable.
Mutations if happens in the reproductive cell gets it carried to the offspring. one in a million mutation will give the organism an added advantage with respect to the other. Under the natural selection process, its population grows exponentially. Over time such mutations adds up. As the population of the herd goes beyond a certain limit, it usually breaks up and moves to some other place. If there is no inter mingling between the two groups, and since mutations are happening all the time, this will eventually lead to the formation of a different species.
Genetics is a huge branch of science with millions of people contributing to it and thinking about it. If they happened to find some error in it on the way, they (or others) will suggest how to rectify it and thousands will scrutinize it over time.
Genetically engineered medicines such as insulin, antibiotics etc are all proofs that our science is on the right path. It can predict the medical conditions (future) of a kid even before the kid is born. take preventive steps so the kid will have a healthier life. It can predict the ancestry of human history and the evolution of various organisms.
If you (or your loved ones) happened to have a disease and if you go to a doctor, he may be be prescribing medications that were produced by the blessings of modern genetic engineering.
Studying and understanding the heart doesn't mean that we can produce hearts, we can't even
produce the human blood and rely on blood donations.