No but it's good to talk about these things. And maybe look at how we've been programmed to think, through our . educational systems.
I totally agree with you. I once had my students try to fly. I asked them if they had tried to fly, or just believed they could not fly because they had been told so. You are also asking some good questions. The Cambrian explosion is somewhat of a mystery in biology. Even more inexplicable is where life itself comes from. Is it a weird quantum phenomena, is life unusual in the universe, did it even start here? I don't know, and I teach this stuff. So questioning is always appropriate in science.
We cant, however, ignore the evidence we do find. In over 150 years of tests and observation no findings contradict the theory of evolution. Indeed we now see how it works right down to the chemical process of DNA. We see that all living things are really expressions of this chemical and even contain a record of how all these forms are related. By looking at fossils we can tell something about creatures from the past and track how their bodies change and become different species over time. We can even directly observe evolution in short lived organisms like germs.
Why it happened, what it means, is a different question.
