Evolution is not observable. There is no way one can observe "millions of years" of gradual changes in an organism by means of natural selection in a laboratory. That is a historical claim, and therefore, it is a claim full of assumptions about the past and based on faith. Variations in kinds of animals occurs in nature, whereby, we can see that some insects become resistant to pesticides (for instance), while other insects don't. The insects who are resistant to pesticides live on to pass those traits to their offspring, but they still remain an insect. They don't evolve into something that is non-insectlike, such as a frog or a wolf or a buffalo. Their genetic information has limits. That has been proven scientifically over and over again. So, you are obviously wrong about evolution being observable. The only way it's observable if someone imagines that it could have happen that way, and that's exactly the language that evolutionists use.