
Originally Posted by
Zso_Zso
This may have been a valid criticism of Darwin's early evolutionary theories, but modern evolutionary science is equipped with much more than observation of species and fossils. The main proof is in the gene sequences which provides ample data when similarities and differences are studied for various species. That is the proof for macro-evolution as opposed to micro.
Did you know that rats and humans have 95% gene sequence identity ?
That's the primary reason why pharmaceuticals can use animal testing of new drugs before going into clinical trials for human testing. If the drug works on mice it has a very strong chance to work on humans too, because of the 95% identity. Gene are extracted and sequenced not only from living species but from fossils too, providing the proof for genetic linkages.
That's scientific method too. Not every science can afford to perform experiments, e.g. astro-physics is another good example. We cannot experiment with stars, black holes, quasar but we can still observe and collect data upon which we can work out the laws of nature.
BTW, I understand the reason why Americans have such hard time to accept evolution. I grew up and was educated in Europe, but my kids were born and are being educated in North America. I was completely shocked to find out that evolution is completely missing from the curriculum. They learn about biology, even classification of species without any mention of evolution -- at least up to grade 7 where my daughter is now.
"Common sense is based on what you learn from birth to 18 years of age" as some smart man once said (paraphrased, exact quote and author escapes my ageing mind right now).